I've started a 3rd project car recently, the Fujimi 575M Maranello.
So far I've corrected a few of the bodys innaccuracys. I added the missing panel lines near the headlights and A-pillars. I also opened the hood and side vents up a bit.
I don't usually build red Ferraris, but I have painted the body Cobra Colors Rosso Barchetta. It's a slightly darker red than the typical Ferrari re-sale red.
The interior will be a creme/tan/black combination.
After the first couple coats the paint was pretty orange peely. So I let that dry for a couple hours and lightly wet sanded the whole car smooth, and reprayed another coat. The finish now is smooth, and ready for clear.
A real 550 in Rosso Barchetta
Before wetsanding:
After wetsanding and respraying: