Implemented `HasColor` and `CanColor` for `RectangleColorContext`
Implemented `HasColor` and `CanColor` for `RectangleColorContext`

bvssvni/graphics,stjahns/graphics,PistonDevelopers/graphics,andrewcsmith/graphics,aepsil0n/graphics,echochamber/graphics,Vinatorul/graphics,mitchmindtree/graphics