I painted this Mercury with Duplicolor primer, two different colors of Tamiya spray can paint, and TESTORS Wet Look Clear:
The odd thing about this build....the clear was smooth as glass on the green, but came out grainy on the blue....even tho I sprayed the clear over both colors at the same time. Wet sanding got it to this point. Not perfect, but it's in my display case!! LOL
If you have a natural break point between colors, such as the chrome trim shown on this Mercury, careful masking gives you a choice of which color to shoot first. I was able to not overlap the colors on this build.
Time will tell if the clear cracks, but for now, it looks very good. There are about three coats of clear on this build.