Yeah, the other colors bleed through.... but I tried drawing it all out and doing a single layer of each color. It does not work well. A thick line forms where the colors meet - that's all well and good but it really messes up the rapier blade... ends up looking rough. Two layers with a third layer for touch up will get the colors solid.
The key is making sure you buy the same color of the same brand of paint.... I may end up discarding a few older ones. People really obsess over the few that don't quite match on the string. >_<