John remember not all colors are made in the same plants etc, so it could be a different mix etc. Different colors can be incompatible in spray cans due to the forumulation. From what Spence says I bet it's still flashing off. Try a thinner coat if you can and let it dry longer. Or you could do a clear over it but still make sure it's dry before you finish it otherwise you may still have problems. I seem to remember there are some colors of Rustoleum that can't be used together too. You don't see this as much with lacquers such as Krylon etc.
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