Fix Shape tool custom color picker using gamma not linear space (#2773)

Fix colour space for options

Author: 0HyperCube

editor/src/messages/tool/tool_messages/shape_tool.rs

@@ -143,7 +143,7 @@ impl LayoutHolder for ShapeTool {
 				true,
 				|_| ShapeToolMessage::UpdateOptions(ShapeOptionsUpdate::FillColor(None)).into(),
 				|color_type: ToolColorType| WidgetCallback::new(move |_| ShapeToolMessage::UpdateOptions(ShapeOptionsUpdate::FillColorType(color_type.clone())).into()),
-				|color: &ColorInput| ShapeToolMessage::UpdateOptions(ShapeOptionsUpdate::FillColor(color.value.as_solid())).into(),
+				|color: &ColorInput| ShapeToolMessage::UpdateOptions(ShapeOptionsUpdate::FillColor(color.value.as_solid().map(|color| color.to_linear_srgb()))).into(),
 			));
 
 			widgets.push(Separator::new(SeparatorType::Unrelated).widget_holder());
@@ -154,7 +154,7 @@ impl LayoutHolder for ShapeTool {
 			true,
 			|_| ShapeToolMessage::UpdateOptions(ShapeOptionsUpdate::StrokeColor(None)).into(),
 			|color_type: ToolColorType| WidgetCallback::new(move |_| ShapeToolMessage::UpdateOptions(ShapeOptionsUpdate::StrokeColorType(color_type.clone())).into()),
-			|color: &ColorInput| ShapeToolMessage::UpdateOptions(ShapeOptionsUpdate::StrokeColor(color.value.as_solid())).into(),
+			|color: &ColorInput| ShapeToolMessage::UpdateOptions(ShapeOptionsUpdate::StrokeColor(color.value.as_solid().map(|color| color.to_linear_srgb()))).into(),
 		));
 		widgets.push(Separator::new(SeparatorType::Unrelated).widget_holder());
 		widgets.push(create_weight_widget(self.options.line_weight));