As Cadman already mentioned, you can do that. I do it on colors like Table Rock Shad which is a while belly, chartreuse body and a purple back. If I don't cure the chartreuse first, the purple over top of the chartreuse will turn brown when cured together so I do one then cure it again. I also do the same thing for the illusion paint, paint the vein base then cure for 10 minutes at 350 and let air cool and then go over with the candy color, it does the same thing, it keeps the top layer from blending with the bottom layer but it does bond together, it just doesn't allow the colors to bleed.