Changing scenery items colors

I was checking the "Check here before!" sticky suggestions thread thingy and didnt see it there.
I only 'played' a little of the alpha yet and I already thought "Hey, I want to change the color of this object." when placing one of those round, coaster-rail archway in red.
I think the game would massively gain if you can change the colors of scenery like this. Im pretty sure this doesnt even have to be in-depth option, but at least some general changes.