2001 prius custom repaint

im planning on repainting the 2001 prius that i have, i paid a body shop place to do it in 2004 for about 1,000 dollars. That ending up being a rip off, and my prius paint job is horrible and peels off really easily. 4 years later, I have a friend who does autobody for about 20 years and he thought me how to paint a vehicle.

i purchased a SATAjet digital spray gun recently, and im contemplating a good color to paint the prius, i was thinking a gunmetal metallic, with a pearl, but im not sure what kind of pearl to add to the car.

if anyone thinks of any good color combination / pearl i would love to hear suggestions, and anyone who has repainted their NHW11 prius.