My cab, bed, and hood will be a light green and I want my fenders and running boards to be a little darker shade of green. When mixing the paint for the fenders, what % of black might make an effective darkening? I don't want to put it on and it be too dark or too light. I know only I can tell if it is "too much" and that I need to spray it on something to test. I thought some of you have done this and might have some ideas or warnings.
