I'm not going to build Rainbow Brite, but some colours may be interesting. :P

The red and green turned out pretty good and the blue is always a favorite, but I'm trying to find a decent black or slate grey. I used a paste on Felicia (the catwoman sculpture if you remember that one) but it needs some maintenance. So a chemical that reacts with the steel and can be sealed would be perfect. Working on it. Watch this space. :P