When I paint candy colored graphics this is how it goes.
I paint the recommended base first, it's usually silver , gold, or white.
The candy color will have one specified. This base is only for
reflecting up through the candy paint.
Next I spray the candy color, it's a clear with a color that's translucent.
You can see through it. I keep adding coats of candy untill I get the
color or effect I'm after. Usually by this time, several coats later, you
really can't hardly tell the base is there. But it is and it affects the look.
Once the color is what I want I clear over it with a urethane just like a
regular base coat paint job.
It's really that simple. Now on large areas like a car you have to be consistent
on the color coats so it all matches, every coat you add will change the
color a little. That's the challenge.