Dynamic theming. Closes #241.

Upgrades to Roact master and introduces dynamic theme switching.

We branch on the theme name in order to try to use Rojo's brand
colors instead of Studio's. I kind of winged it with these colors
and we might want to choose slightly nicer dark theme colors
in the future.

I also took the opportunity to reorganize the color naming scheme
since it didn't really work for dark theme.

plugin/src/Components/App.lua

@@ -13,6 +13,7 @@ local Version = require(Plugin.Version)
 local preloadAssets = require(Plugin.preloadAssets)
 local strict = require(Plugin.strict)
 
+local Theme = require(Plugin.Components.Theme)
 local ConnectPanel = require(Plugin.Components.ConnectPanel)
 local ConnectingPanel = require(Plugin.Components.ConnectingPanel)
 local ConnectionActivePanel = require(Plugin.Components.ConnectionActivePanel)
@@ -199,9 +200,11 @@ function App:render()
 		}
 	end
 
-	return Roact.createElement(Roact.Portal, {
-		target = self.dockWidget,
-	}, children)
+	return Roact.createElement(Theme.StudioProvider, nil, {
+		UI = Roact.createElement(Roact.Portal, {
+			target = self.dockWidget,
+		}, children),
+	})
 end
 
 function App:didMount()

plugin/src/Components/ConnectPanel.lua

@@ -4,8 +4,8 @@ local Plugin = Rojo.Plugin
 local Roact = require(Rojo.Roact)
 
 local Config = require(Plugin.Config)
-local Theme = require(Plugin.Theme)
 
+local Theme = require(Plugin.Components.Theme)
 local Panel = require(Plugin.Components.Panel)
 local FitList = require(Plugin.Components.FitList)
 local FitText = require(Plugin.Components.FitText)
@@ -26,136 +26,138 @@ end
 function ConnectPanel:render()
 	local startSession = self.props.startSession
 
-	return e(Panel, nil, {
-		Layout = e("UIListLayout", {
-			SortOrder = Enum.SortOrder.LayoutOrder,
-			HorizontalAlignment = Enum.HorizontalAlignment.Center,
-			VerticalAlignment = Enum.VerticalAlignment.Center,
-		}),
+	return Theme.with(function(theme)
+		return e(Panel, nil, {
+			Layout = e("UIListLayout", {
+				SortOrder = Enum.SortOrder.LayoutOrder,
+				HorizontalAlignment = Enum.HorizontalAlignment.Center,
+				VerticalAlignment = Enum.VerticalAlignment.Center,
+			}),
 
-		Inputs = e(FitList, {
-			containerProps = {
-				BackgroundTransparency = 1,
-				LayoutOrder = 1,
-			},
-			layoutProps = {
-				FillDirection = Enum.FillDirection.Horizontal,
-				Padding = UDim.new(0, 8),
-			},
-			paddingProps = {
-				PaddingTop = UDim.new(0, 20),
-				PaddingBottom = UDim.new(0, 10),
-				PaddingLeft = UDim.new(0, 24),
-				PaddingRight = UDim.new(0, 24),
-			},
-		}, {
-			Address = e(FitList, {
+			Inputs = e(FitList, {
 				containerProps = {
-					LayoutOrder = 1,
 					BackgroundTransparency = 1,
+					LayoutOrder = 1,
 				},
 				layoutProps = {
-					Padding = UDim.new(0, 4),
+					FillDirection = Enum.FillDirection.Horizontal,
+					Padding = UDim.new(0, 8),
+				},
+				paddingProps = {
+					PaddingTop = UDim.new(0, 20),
+					PaddingBottom = UDim.new(0, 10),
+					PaddingLeft = UDim.new(0, 24),
+					PaddingRight = UDim.new(0, 24),
 				},
 			}, {
-				Label = e(FitText, {
-					Kind = "TextLabel",
-					LayoutOrder = 1,
-					BackgroundTransparency = 1,
-					TextXAlignment = Enum.TextXAlignment.Left,
-					Font = Theme.TitleFont,
-					TextSize = 20,
-					Text = "Address",
-					TextColor3 = Theme.PrimaryColor,
+				Address = e(FitList, {
+					containerProps = {
+						LayoutOrder = 1,
+						BackgroundTransparency = 1,
+					},
+					layoutProps = {
+						Padding = UDim.new(0, 4),
+					},
+				}, {
+					Label = e(FitText, {
+						Kind = "TextLabel",
+						LayoutOrder = 1,
+						BackgroundTransparency = 1,
+						TextXAlignment = Enum.TextXAlignment.Left,
+						Font = theme.TitleFont,
+						TextSize = 20,
+						Text = "Address",
+						TextColor3 = theme.Text1,
+					}),
+
+					Input = e(FormTextInput, {
+						layoutOrder = 2,
+						width = UDim.new(0, 220),
+						value = self.state.address,
+						placeholderValue = Config.defaultHost,
+						onValueChange = function(newValue)
+							self:setState({
+								address = newValue,
+							})
+						end,
+					}),
 				}),
 
-				Input = e(FormTextInput, {
-					layoutOrder = 2,
-					width = UDim.new(0, 220),
-					value = self.state.address,
-					placeholderValue = Config.defaultHost,
-					onValueChange = function(newValue)
-						self:setState({
-							address = newValue,
-						})
-					end,
+				Port = e(FitList, {
+					containerProps = {
+						LayoutOrder = 2,
+						BackgroundTransparency = 1,
+					},
+					layoutProps = {
+						Padding = UDim.new(0, 4),
+					},
+				}, {
+					Label = e(FitText, {
+						Kind = "TextLabel",
+						LayoutOrder = 1,
+						BackgroundTransparency = 1,
+						TextXAlignment = Enum.TextXAlignment.Left,
+						Font = theme.TitleFont,
+						TextSize = 20,
+						Text = "Port",
+						TextColor3 = theme.Text1,
+					}),
+
+					Input = e(FormTextInput, {
+						layoutOrder = 2,
+						width = UDim.new(0, 80),
+						value = self.state.port,
+						placeholderValue = Config.defaultPort,
+						onValueChange = function(newValue)
+							self:setState({
+								port = newValue,
+							})
+						end,
+					}),
 				}),
 			}),
 
-			Port = e(FitList, {
+			Buttons = e(FitList, {
+				fitAxes = "Y",
 				containerProps = {
+					BackgroundTransparency = 1,
 					LayoutOrder = 2,
-					BackgroundTransparency = 1,
+					Size = UDim2.new(1, 0, 0, 0),
 				},
 				layoutProps = {
-					Padding = UDim.new(0, 4),
+					FillDirection = Enum.FillDirection.Horizontal,
+					HorizontalAlignment = Enum.HorizontalAlignment.Right,
+					Padding = UDim.new(0, 8),
+				},
+				paddingProps = {
+					PaddingTop = UDim.new(0, 0),
+					PaddingBottom = UDim.new(0, 20),
+					PaddingLeft = UDim.new(0, 24),
+					PaddingRight = UDim.new(0, 24),
 				},
 			}, {
-				Label = e(FitText, {
-					Kind = "TextLabel",
-					LayoutOrder = 1,
-					BackgroundTransparency = 1,
-					TextXAlignment = Enum.TextXAlignment.Left,
-					Font = Theme.TitleFont,
-					TextSize = 20,
-					Text = "Port",
-					TextColor3 = Theme.PrimaryColor,
-				}),
-
-				Input = e(FormTextInput, {
+				e(FormButton, {
 					layoutOrder = 2,
-					width = UDim.new(0, 80),
-					value = self.state.port,
-					placeholderValue = Config.defaultPort,
-					onValueChange = function(newValue)
-						self:setState({
-							port = newValue,
-						})
+					text = "Connect",
+					onClick = function()
+						if startSession ~= nil then
+							local address = self.state.address
+							if address:len() == 0 then
+								address = Config.defaultHost
+							end
+
+							local port = self.state.port
+							if port:len() == 0 then
+								port = Config.defaultPort
+							end
+
+							startSession(address, port)
+						end
 					end,
 				}),
 			}),
-		}),
-
-		Buttons = e(FitList, {
-			fitAxes = "Y",
-			containerProps = {
-				BackgroundTransparency = 1,
-				LayoutOrder = 2,
-				Size = UDim2.new(1, 0, 0, 0),
-			},
-			layoutProps = {
-				FillDirection = Enum.FillDirection.Horizontal,
-				HorizontalAlignment = Enum.HorizontalAlignment.Right,
-				Padding = UDim.new(0, 8),
-			},
-			paddingProps = {
-				PaddingTop = UDim.new(0, 0),
-				PaddingBottom = UDim.new(0, 20),
-				PaddingLeft = UDim.new(0, 24),
-				PaddingRight = UDim.new(0, 24),
-			},
-		}, {
-			e(FormButton, {
-				layoutOrder = 2,
-				text = "Connect",
-				onClick = function()
-					if startSession ~= nil then
-						local address = self.state.address
-						if address:len() == 0 then
-							address = Config.defaultHost
-						end
-
-						local port = self.state.port
-						if port:len() == 0 then
-							port = Config.defaultPort
-						end
-
-						startSession(address, port)
-					end
-				end,
-			}),
-		}),
-	})
+		})
+	end)
 end
 
 return ConnectPanel

plugin/src/Components/ConnectingPanel.lua

@@ -2,8 +2,7 @@ local Roact = require(script:FindFirstAncestor("Rojo").Roact)
 
 local Plugin = script:FindFirstAncestor("Plugin")
 
-local Theme = require(Plugin.Theme)
-
+local Theme = require(Plugin.Components.Theme)
 local Panel = require(Plugin.Components.Panel)
 local FitText = require(Plugin.Components.FitText)
 
@@ -12,23 +11,25 @@ local e = Roact.createElement
 local ConnectingPanel = Roact.Component:extend("ConnectingPanel")
 
 function ConnectingPanel:render()
-	return e(Panel, nil, {
-		Layout = Roact.createElement("UIListLayout", {
-			HorizontalAlignment = Enum.HorizontalAlignment.Center,
-			VerticalAlignment = Enum.VerticalAlignment.Center,
-			SortOrder = Enum.SortOrder.LayoutOrder,
-			Padding = UDim.new(0, 8),
-		}),
+	return Theme.with(function(theme)
+		return e(Panel, nil, {
+			Layout = Roact.createElement("UIListLayout", {
+				HorizontalAlignment = Enum.HorizontalAlignment.Center,
+				VerticalAlignment = Enum.VerticalAlignment.Center,
+				SortOrder = Enum.SortOrder.LayoutOrder,
+				Padding = UDim.new(0, 8),
+			}),
 
-		Text = e(FitText, {
-			Padding = Vector2.new(12, 6),
-			Font = Theme.ButtonFont,
-			TextSize = 18,
-			Text = "Connecting...",
-			TextColor3 = Theme.PrimaryColor,
-			BackgroundTransparency = 1,
-		}),
-	})
+			Text = e(FitText, {
+				Padding = Vector2.new(12, 6),
+				Font = theme.ButtonFont,
+				TextSize = 18,
+				Text = "Connecting...",
+				TextColor3 = theme.Text1,
+				BackgroundTransparency = 1,
+			}),
+		})
+	end)
 end
 
 return ConnectingPanel

plugin/src/Components/ConnectionActivePanel.lua

@@ -2,8 +2,7 @@ local Roact = require(script:FindFirstAncestor("Rojo").Roact)
 
 local Plugin = script:FindFirstAncestor("Plugin")
 
-local Theme = require(Plugin.Theme)
-
+local Theme = require(Plugin.Components.Theme)
 local Panel = require(Plugin.Components.Panel)
 local FitText = require(Plugin.Components.FitText)
 local FormButton = require(Plugin.Components.FormButton)
@@ -15,32 +14,34 @@ local ConnectionActivePanel = Roact.Component:extend("ConnectionActivePanel")
 function ConnectionActivePanel:render()
 	local stopSession = self.props.stopSession
 
-	return e(Panel, nil, {
-		Layout = Roact.createElement("UIListLayout", {
-			HorizontalAlignment = Enum.HorizontalAlignment.Center,
-			VerticalAlignment = Enum.VerticalAlignment.Center,
-			SortOrder = Enum.SortOrder.LayoutOrder,
-			Padding = UDim.new(0, 8),
-		}),
+	return Theme.with(function(theme)
+		return e(Panel, nil, {
+			Layout = Roact.createElement("UIListLayout", {
+				HorizontalAlignment = Enum.HorizontalAlignment.Center,
+				VerticalAlignment = Enum.VerticalAlignment.Center,
+				SortOrder = Enum.SortOrder.LayoutOrder,
+				Padding = UDim.new(0, 8),
+			}),
 
-		Text = e(FitText, {
-			Padding = Vector2.new(12, 6),
-			Font = Theme.ButtonFont,
-			TextSize = 18,
-			Text = "Connected to Live-Sync Server",
-			TextColor3 = Theme.PrimaryColor,
-			BackgroundTransparency = 1,
-		}),
+			Text = e(FitText, {
+				Padding = Vector2.new(12, 6),
+				Font = theme.ButtonFont,
+				TextSize = 18,
+				Text = "Connected to Live-Sync Server",
+				TextColor3 = theme.Text1,
+				BackgroundTransparency = 1,
+			}),
 
-		DisconnectButton = e(FormButton, {
-			layoutOrder = 2,
-			text = "Disconnect",
-			secondary = true,
-			onClick = function()
-				stopSession()
-			end,
-		}),
-	})
+			DisconnectButton = e(FormButton, {
+				layoutOrder = 2,
+				text = "Disconnect",
+				secondary = true,
+				onClick = function()
+					stopSession()
+				end,
+			}),
+		})
+	end)
 end
 
 return ConnectionActivePanel

plugin/src/Components/ErrorPanel.lua

@@ -2,8 +2,7 @@ local Roact = require(script:FindFirstAncestor("Rojo").Roact)
 
 local Plugin = script:FindFirstAncestor("Plugin")
 
-local Theme = require(Plugin.Theme)
-
+local Theme = require(Plugin.Components.Theme)
 local Panel = require(Plugin.Components.Panel)
 local FitText = require(Plugin.Components.FitText)
 local FitScrollingFrame = require(Plugin.Components.FitScrollingFrame)
@@ -20,50 +19,52 @@ function ErrorPanel:render()
 	local errorMessage = self.props.errorMessage
 	local onDismiss = self.props.onDismiss
 
-	return e(Panel, nil, {
-		Layout = Roact.createElement("UIListLayout", {
-			HorizontalAlignment = Enum.HorizontalAlignment.Center,
-			VerticalAlignment = Enum.VerticalAlignment.Center,
-			SortOrder = Enum.SortOrder.LayoutOrder,
-			Padding = UDim.new(0, 8),
-		}),
-
-		ErrorContainer = e(FitScrollingFrame, {
-			containerProps = {
-				BackgroundTransparency = 1,
-				BorderSizePixel = 0,
-				Size = UDim2.new(1, -HOR_PADDING * 2, 1, -BUTTON_HEIGHT),
-				Position = UDim2.new(0, HOR_PADDING, 0, 0),
-				ScrollBarImageColor3 = Theme.PrimaryColor,
-				VerticalScrollBarInset = Enum.ScrollBarInset.ScrollBar,
-				ScrollingDirection = Enum.ScrollingDirection.Y,
-			},
-		}, {
-			Text = e(FitText, {
-				Size = UDim2.new(1, 0, 0, 0),
-
-				LayoutOrder = 1,
-				TextXAlignment = Enum.TextXAlignment.Left,
-				TextYAlignment = Enum.TextYAlignment.Top,
-				FitAxis = "Y",
-				Font = Theme.ButtonFont,
-				TextSize = 18,
-				Text = errorMessage,
-				TextWrap = true,
-				TextColor3 = Theme.PrimaryColor,
-				BackgroundTransparency = 1,
+	return Theme.with(function(theme)
+		return e(Panel, nil, {
+			Layout = Roact.createElement("UIListLayout", {
+				HorizontalAlignment = Enum.HorizontalAlignment.Center,
+				VerticalAlignment = Enum.VerticalAlignment.Center,
+				SortOrder = Enum.SortOrder.LayoutOrder,
+				Padding = UDim.new(0, 8),
 			}),
-		}),
 
-		DismissButton = e(FormButton, {
-			layoutOrder = 2,
-			text = "Dismiss",
-			secondary = true,
-			onClick = function()
-				onDismiss()
-			end,
-		}),
-	})
+			ErrorContainer = e(FitScrollingFrame, {
+				containerProps = {
+					BackgroundTransparency = 1,
+					BorderSizePixel = 0,
+					Size = UDim2.new(1, -HOR_PADDING * 2, 1, -BUTTON_HEIGHT),
+					Position = UDim2.new(0, HOR_PADDING, 0, 0),
+					ScrollBarImageColor3 = theme.Text1,
+					VerticalScrollBarInset = Enum.ScrollBarInset.ScrollBar,
+					ScrollingDirection = Enum.ScrollingDirection.Y,
+				},
+			}, {
+				Text = e(FitText, {
+					Size = UDim2.new(1, 0, 0, 0),
+
+					LayoutOrder = 1,
+					TextXAlignment = Enum.TextXAlignment.Left,
+					TextYAlignment = Enum.TextYAlignment.Top,
+					FitAxis = "Y",
+					Font = theme.ButtonFont,
+					TextSize = 18,
+					Text = errorMessage,
+					TextWrap = true,
+					TextColor3 = theme.Text1,
+					BackgroundTransparency = 1,
+				}),
+			}),
+
+			DismissButton = e(FormButton, {
+				layoutOrder = 2,
+				text = "Dismiss",
+				secondary = true,
+				onClick = function()
+					onDismiss()
+				end,
+			}),
+		})
+	end)
 end
 
 return ErrorPanel

plugin/src/Components/FormButton.lua

@@ -4,7 +4,7 @@ local Plugin = Rojo.Plugin
 local Roact = require(Rojo.Roact)
 
 local Assets = require(Plugin.Assets)
-local Theme = require(Plugin.Theme)
+local Theme = require(Plugin.Components.Theme)
 local FitList = require(Plugin.Components.FitList)
 local FitText = require(Plugin.Components.FitText)
 
@@ -20,43 +20,45 @@ local function FormButton(props)
 	local textColor
 	local backgroundColor
 
-	if props.secondary then
-		textColor = Theme.AccentColor
-		backgroundColor = Theme.SecondaryColor
-	else
-		textColor = Theme.SecondaryColor
-		backgroundColor = Theme.AccentColor
-	end
+	return Theme.with(function(theme)
+		if props.secondary then
+			textColor = theme.Brand1
+			backgroundColor = theme.Background2
+		else
+			textColor = theme.TextOnAccent
+			backgroundColor = theme.Brand1
+		end
 
-	return e(FitList, {
-		containerKind = "ImageButton",
-		containerProps = {
-			LayoutOrder = layoutOrder,
-			BackgroundTransparency = 1,
-			Image = RoundBox.asset,
-			ImageRectOffset = RoundBox.offset,
-			ImageRectSize = RoundBox.size,
-			SliceCenter = RoundBox.center,
-			ScaleType = Enum.ScaleType.Slice,
-			ImageColor3 = backgroundColor,
+		return e(FitList, {
+			containerKind = "ImageButton",
+			containerProps = {
+				LayoutOrder = layoutOrder,
+				BackgroundTransparency = 1,
+				Image = RoundBox.asset,
+				ImageRectOffset = RoundBox.offset,
+				ImageRectSize = RoundBox.size,
+				SliceCenter = RoundBox.center,
+				ScaleType = Enum.ScaleType.Slice,
+				ImageColor3 = backgroundColor,
 
-			[Roact.Event.Activated] = function()
-				if onClick ~= nil then
-					onClick()
-				end
-			end,
-		},
-	}, {
-		Text = e(FitText, {
-			Kind = "TextLabel",
-			Text = text,
-			TextSize = 18,
-			TextColor3 = textColor,
-			Font = Theme.ButtonFont,
-			Padding = Vector2.new(16, 8),
-			BackgroundTransparency = 1,
-		}),
-	})
+				[Roact.Event.Activated] = function()
+					if onClick ~= nil then
+						onClick()
+					end
+				end,
+			},
+		}, {
+			Text = e(FitText, {
+				Kind = "TextLabel",
+				Text = text,
+				TextSize = 18,
+				TextColor3 = textColor,
+				Font = theme.ButtonFont,
+				Padding = Vector2.new(16, 8),
+				BackgroundTransparency = 1,
+			}),
+		})
+	end)
 end
 
 return FormButton

plugin/src/Components/FormTextInput.lua

@@ -4,7 +4,7 @@ local Plugin = Rojo.Plugin
 local Roact = require(Rojo.Roact)
 
 local Assets = require(Plugin.Assets)
-local Theme = require(Plugin.Theme)
+local Theme = require(Plugin.Components.Theme)
 
 local e = Roact.createElement
 
@@ -35,46 +35,48 @@ function FormTextInput:render()
 		shownPlaceholder = placeholderValue
 	end
 
-	return e("ImageLabel", {
-		LayoutOrder = layoutOrder,
-		Image = RoundBox.asset,
-		ImageRectOffset = RoundBox.offset,
-		ImageRectSize = RoundBox.size,
-		ScaleType = Enum.ScaleType.Slice,
-		SliceCenter = RoundBox.center,
-		ImageColor3 = Theme.SecondaryColor,
-		Size = UDim2.new(width.Scale, width.Offset, 0, TEXT_SIZE + PADDING * 2),
-		BackgroundTransparency = 1,
-	}, {
-		InputInner = e("TextBox", {
+	return Theme.with(function(theme)
+		return e("ImageLabel", {
+			LayoutOrder = layoutOrder,
+			Image = RoundBox.asset,
+			ImageRectOffset = RoundBox.offset,
+			ImageRectSize = RoundBox.size,
+			ScaleType = Enum.ScaleType.Slice,
+			SliceCenter = RoundBox.center,
+			ImageColor3 = theme.Background2,
+			Size = UDim2.new(width.Scale, width.Offset, 0, TEXT_SIZE + PADDING * 2),
 			BackgroundTransparency = 1,
-			Size = UDim2.new(1, -PADDING * 2, 1, -PADDING * 2),
-			Position = UDim2.new(0.5, 0, 0.5, 0),
-			AnchorPoint = Vector2.new(0.5, 0.5),
-			Font = Theme.InputFont,
-			ClearTextOnFocus = false,
-			TextXAlignment = Enum.TextXAlignment.Center,
-			TextSize = TEXT_SIZE,
-			Text = value,
-			PlaceholderText = shownPlaceholder,
-			PlaceholderColor3 = Theme.LightTextColor,
-			TextColor3 = Theme.PrimaryColor,
+		}, {
+			InputInner = e("TextBox", {
+				BackgroundTransparency = 1,
+				Size = UDim2.new(1, -PADDING * 2, 1, -PADDING * 2),
+				Position = UDim2.new(0.5, 0, 0.5, 0),
+				AnchorPoint = Vector2.new(0.5, 0.5),
+				Font = theme.InputFont,
+				ClearTextOnFocus = false,
+				TextXAlignment = Enum.TextXAlignment.Center,
+				TextSize = TEXT_SIZE,
+				Text = value,
+				PlaceholderText = shownPlaceholder,
+				PlaceholderColor3 = theme.Text2,
+				TextColor3 = theme.Text1,
 
-			[Roact.Change.Text] = function(rbx)
-				onValueChange(rbx.Text)
-			end,
-			[Roact.Event.Focused] = function()
-				self:setState({
-					focused = true,
-				})
-			end,
-			[Roact.Event.FocusLost] = function()
-				self:setState({
-					focused = false,
-				})
-			end,
-		}),
-	})
+				[Roact.Change.Text] = function(rbx)
+					onValueChange(rbx.Text)
+				end,
+				[Roact.Event.Focused] = function()
+					self:setState({
+						focused = true,
+					})
+				end,
+				[Roact.Event.FocusLost] = function()
+					self:setState({
+						focused = false,
+					})
+				end,
+			}),
+		})
+	end)
 end
 
 return FormTextInput

plugin/src/Components/Panel.lua

@@ -3,6 +3,7 @@ local Roact = require(script:FindFirstAncestor("Rojo").Roact)
 local Plugin = script:FindFirstAncestor("Plugin")
 
 local RojoFooter = require(Plugin.Components.RojoFooter)
+local Theme = require(Plugin.Components.Theme)
 
 local e = Roact.createElement
 
@@ -13,22 +14,25 @@ function Panel:init()
 end
 
 function Panel:render()
-	return e("Frame", {
-		Size = UDim2.new(1, 0, 1, 0),
-		BackgroundTransparency = 1,
-	}, {
-		Layout = Roact.createElement("UIListLayout", {
-			HorizontalAlignment = Enum.HorizontalAlignment.Center,
-			SortOrder = Enum.SortOrder.LayoutOrder,
-		}),
-
-		Body = e("Frame", {
-			Size = UDim2.new(0, 360, 1, -32),
+	return Theme.with(function(theme)
+		return e("Frame", {
+			Size = UDim2.new(1, 0, 1, 0),
 			BackgroundTransparency = 1,
-		}, self.props[Roact.Children]),
+		}, {
+			Layout = Roact.createElement("UIListLayout", {
+				HorizontalAlignment = Enum.HorizontalAlignment.Center,
+				SortOrder = Enum.SortOrder.LayoutOrder,
+			}),
 
-		Footer = e(RojoFooter),
-	})
+			Body = e("Frame", {
+				Size = UDim2.new(0, 360, 1, -32),
+				BackgroundColor3 = theme.Background1,
+				BorderSizePixel = 0,
+			}, self.props[Roact.Children]),
+
+			Footer = e(RojoFooter),
+		})
+	end)
 end
 
 return Panel

plugin/src/Components/RojoFooter.lua

@@ -6,7 +6,7 @@ local Roact = require(Rojo.Roact)
 local Config = require(Plugin.Config)
 local Version = require(Plugin.Version)
 local Assets = require(Plugin.Assets)
-local Theme = require(Plugin.Theme)
+local Theme = require(Plugin.Components.Theme)
 
 local e = Roact.createElement
 
@@ -18,50 +18,53 @@ function RojoFooter:init()
 end
 
 function RojoFooter:render()
-	return e("Frame", {
-		LayoutOrder = 3,
-		Size = UDim2.new(1, 0, 0, 32),
-		BackgroundColor3 = Theme.SecondaryColor,
-		BorderSizePixel = 0,
-	}, {
-		Padding = e("UIPadding", {
-			PaddingTop = UDim.new(0, 4),
-			PaddingBottom = UDim.new(0, 4),
-			PaddingLeft = UDim.new(0, 8),
-			PaddingRight = UDim.new(0, 8),
-		}),
-
-		LogoContainer = e("Frame", {
-			BackgroundTransparency = 1,
-
-			Size = UDim2.new(0, 0, 0, 32),
+	return Theme.with(function(theme)
+		return e("Frame", {
+			LayoutOrder = 3,
+			Size = UDim2.new(1, 0, 0, 32),
+			BackgroundColor3 = theme.Background2,
+			BorderSizePixel = 0,
+			ZIndex = 2,
 		}, {
-			Logo = e("ImageLabel", {
-				Image = Assets.Images.Logo,
-				Size = UDim2.new(0, 80, 0, 40),
-				ScaleType = Enum.ScaleType.Fit,
-				BackgroundTransparency = 1,
-				Position = UDim2.new(0, 0, 1, -10),
-				AnchorPoint = Vector2.new(0, 1),
+			Padding = e("UIPadding", {
+				PaddingTop = UDim.new(0, 4),
+				PaddingBottom = UDim.new(0, 4),
+				PaddingLeft = UDim.new(0, 8),
+				PaddingRight = UDim.new(0, 8),
 			}),
-		}),
 
-		Version = e("TextLabel", {
-			Position = UDim2.new(1, 0, 0, 0),
-			Size = UDim2.new(0, 0, 1, 0),
-			AnchorPoint = Vector2.new(1, 0),
-			Font = Theme.TitleFont,
-			TextSize = 18,
-			Text = Version.display(Config.version),
-			TextXAlignment = Enum.TextXAlignment.Right,
-			TextColor3 = Theme.LightTextColor,
-			BackgroundTransparency = 1,
+			LogoContainer = e("Frame", {
+				BackgroundTransparency = 1,
 
-			[Roact.Change.AbsoluteSize] = function(rbx)
-				self.setFooterVersionSize(rbx.AbsoluteSize)
-			end,
-		}),
-	})
+				Size = UDim2.new(0, 0, 0, 32),
+			}, {
+				Logo = e("ImageLabel", {
+					Image = Assets.Images.Logo,
+					Size = UDim2.new(0, 80, 0, 40),
+					ScaleType = Enum.ScaleType.Fit,
+					BackgroundTransparency = 1,
+					Position = UDim2.new(0, 0, 1, -10),
+					AnchorPoint = Vector2.new(0, 1),
+				}),
+			}),
+
+			Version = e("TextLabel", {
+				Position = UDim2.new(1, 0, 0, 0),
+				Size = UDim2.new(0, 0, 1, 0),
+				AnchorPoint = Vector2.new(1, 0),
+				Font = theme.TitleFont,
+				TextSize = 18,
+				Text = Version.display(Config.version),
+				TextXAlignment = Enum.TextXAlignment.Right,
+				TextColor3 = theme.Text2,
+				BackgroundTransparency = 1,
+
+				[Roact.Change.AbsoluteSize] = function(rbx)
+					self.setFooterVersionSize(rbx.AbsoluteSize)
+				end,
+			}),
+		})
+	end)
 end
 
 return RojoFooter

plugin/src/Components/Theme.lua

@@ -0,0 +1,104 @@
+--[[
+	Theming system taking advantage of Roact's new context API.
+
+	Doesn't use colors provided by Studio and instead just branches on theme
+	name. This isn't exactly best practice.
+]]
+
+local Studio = settings():GetService("Studio")
+
+local Rojo = script:FindFirstAncestor("Rojo")
+
+local Roact = require(Rojo.Roact)
+local Log = require(Rojo.Log)
+
+local strict = require(script.Parent.Parent.strict)
+
+local lightTheme = strict("Theme", {
+	ButtonFont = Enum.Font.GothamSemibold,
+	InputFont = Enum.Font.Code,
+	TitleFont = Enum.Font.GothamBold,
+	MainFont = Enum.Font.Gotham,
+
+	Brand1 = Color3.fromRGB(225, 56, 53),
+
+	Text1 = Color3.fromRGB(64, 64, 64),
+	Text2 = Color3.fromRGB(160, 160, 160),
+	TextOnAccent = Color3.fromRGB(235, 235, 235),
+
+	Background1 = Color3.fromRGB(255, 255, 255),
+	Background2 = Color3.fromRGB(235, 235, 235),
+})
+
+local darkTheme = strict("Theme", {
+	ButtonFont = Enum.Font.GothamSemibold,
+	InputFont = Enum.Font.Code,
+	TitleFont = Enum.Font.GothamBold,
+	MainFont = Enum.Font.Gotham,
+
+	Brand1 = Color3.fromRGB(225, 56, 53),
+
+	Text1 = Color3.fromRGB(235, 235, 235),
+	Text2 = Color3.fromRGB(200, 200, 200),
+	TextOnAccent = Color3.fromRGB(235, 235, 235),
+
+	Background1 = Color3.fromRGB(48, 48, 48),
+	Background2 = Color3.fromRGB(64, 64, 64),
+})
+
+local Context = Roact.createContext(lightTheme)
+
+local StudioProvider = Roact.Component:extend("StudioProvider")
+
+-- Pull the current theme from Roblox Studio and update state with it.
+function StudioProvider:updateTheme()
+	local studioTheme = Studio.Theme
+
+	if studioTheme.Name == "Light" then
+		self:setState({
+			theme = lightTheme,
+		})
+	elseif studioTheme.Name == "Dark" then
+		self:setState({
+			theme = darkTheme,
+		})
+	else
+		Log.warn("Unexpected theme '{}'' -- falling back to light theme!", studioTheme.Name)
+
+		self:setState({
+			theme = lightTheme,
+		})
+	end
+end
+
+function StudioProvider:init()
+	self:updateTheme()
+end
+
+function StudioProvider:render()
+	return Roact.createElement(Context.Provider, {
+		value = self.state.theme,
+	}, self.props[Roact.Children])
+end
+
+function StudioProvider:didMount()
+	self.connection = Studio.ThemeChanged:Connect(function()
+		self:updateTheme()
+	end)
+end
+
+function StudioProvider:willUnmount()
+	self.connection:Disconnect()
+end
+
+local function with(callback)
+	return Roact.createElement(Context.Consumer, {
+		render = callback,
+	})
+end
+
+return {
+	StudioProvider = StudioProvider,
+	Consumer = Context.Consumer,
+	with = with,
+}

plugin/src/Theme.lua

@@ -1,14 +0,0 @@
-local strict = require(script.Parent.strict)
-
-return strict("Theme", {
-	ButtonFont = Enum.Font.GothamSemibold,
-	InputFont = Enum.Font.Code,
-	TitleFont = Enum.Font.GothamBold,
-	MainFont = Enum.Font.Gotham,
-
-	AccentColor = Color3.fromRGB(225, 56, 53),
-	AccentLightColor = Color3.fromRGB(255, 146, 145),
-	PrimaryColor = Color3.fromRGB(64, 64, 64),
-	SecondaryColor = Color3.fromRGB(235, 235, 235),
-	LightTextColor = Color3.fromRGB(160, 160, 160),
-})

plugin/src/init.server.lua

@@ -19,7 +19,7 @@ local app = Roact.createElement(App, {
 	plugin = plugin,
 })
 
-local tree = Roact.mount(app, game:GetService("CoreGui"), "Rojo UI")
+local tree = Roact.mount(app, nil, "Rojo UI")
 
 plugin.Unloading:Connect(function()
 	Roact.unmount(tree)