which sculpty color works best

If you're sculpting flesh, then use flesh sculpey. If you're making a Venom, then use black. It doesn't really matter what color you use if you're going to use a lot of coats of paint, but like VP says, if you're going to sculpt something that youre going to paint white, then use white sculpey to begin with, it makes your job a little easier.

Also, if you paint on dark colors, you'll get a darker shade, paint on lighter colors and your paint will look lighter.

Not sure about the metal Fixit but I use the regular and the results are awesome. It only comes in white and when dried makes for a great starting color for painting.

what about fixit, I saw that they have metal.... I wasent clear if the color was just metal or that the texture was different

Answer: I don't know. I think it depends on what you are using it for. If you are making a black figure, use black by all means. Or use white. Whatever! I've only used White and Canvas and I like them because I don't have to do a lot of coats if something is white.