Color wheel or scale objects?

I don't just want CASt for matching furniture (though we need that, too) but in TS3 one of the coolest things I did was create the illusion I had a painting on the wall by using two different wall papers (one was paneling) so the room looked like it had this huge picture framed. It was a sports painting for a kid's room. It looked like they had framed a big painting of a game. That was pretty cool. And being able to disguise an object to have the illusion (by different patterns) of being something else. CASt had endless possibilites. Not just color matching. And if I wanted my Sims to have graying temples etc. That is easy to do by manipulating the three dots of hair color. :D