I'm building right now Tamiya's Boxster special edition. I had the intention to paint it light blue metallic.
I first primered the body parts in two layers after that I painted it with car laquer gloss black en then I sprayed two layers of the Light blue metallic nail polish over it. The color turned into light green metallic. It surprised me a bit but I like it very much.
The interior I painted black with Tamiya X 32 Titanium Silver.
I painted the rims Tamiya X 31 Titanium Gold.
Believe me the color suits the car very good. When the car is finished I will take some pictures of it so I could post them to this forum.
I hope it helps you to make up your mind.
Take care.
JP