FC7 Plum Crazy Purple paint question

IMHO the color of the sealer or primer, whatever the layer of COLORED primer/sealer, under the topcoat can affect the look of the topcoat. Yes certain color topcoats will require more coats. Some do well with 2-3 coats, other needs 5-6. Maybe I am wrong!
I reduce epoxy primer for my sealer. It comes in white, black, or gray. Makes a difference.
I guess IF I use enough topcoats, then maybe not!!!!