Depends on the bait your making, certain colorants have black added to them ie...green pumpkin, you can play on the colorant and reduce the amount of black you need to mix and still arrive at a good degree of opaque without sacrificing color. Don't exempt the amount of flakes you may use as well. Also depends if you're laminating 2 colors, one can be more translucent than the other, determine which one you want to be dominant.