You will need:

SEM Plastic Prep
SEM Vinyl Prep
SEM Color of your choice
SEM High clear gloss

SEM's is the only permanent/flexible vinyl and plastic interior paint that you can use and will last forever. The automotive shops that restore interiors use this. It's about 8 dollars a can but you get what you pay for. Trust me..this is the only paint you want to use. You can get it at any auto body paint n supply shop. Or I've even seen the stuff at NAPA.

1st - you have to clean excess dirt off of parts with a cleaner that has degreasing agents in it (simple green, 409)

2nd - you have to prep the parts with SEM plastic or vinyl prep. Just spray it on and in a few seconds wipe it off. (this softens up the part a little and removes any remaining wax, grease, dirt (anything that will not allow the paint to adhere)

3rd - with several thin coats (avoid one heavy coat) spray you choice of SEMs various colors. The stuff dries in 10 min. So allow that much time in between coats.

4th - Spray several coats of SEMs high gloss (the more coats of this you use..the better it looks)

give it 24hours before you actually start messing with the parts (installing and shit like that)

Remember ..only use SEMs products..you can't go wrong with it. They have detailed instructions on how to use the stuff on the back also. They sell the stuff in aerosol spray cans or in pints for airguns. now do it right and don't f*ck up your shit!!!!