well since I did my bellypan with K6 Grand Napoleon Blue I can tell u that there are 2 ways of painting it
3 coat so 1st the silver then the blue and then clear cote
OR
just mix the silver with the blue and spray it then clear cote! you will be VERY surprised that the outcome is exactly the same.
Reason is that the blue paint is VERY watery AND it's more of a dye