Stains + nitro lacquer for see-thru colours, lol
Car paints such as Auto Air or air brush paints such as createx (the make the auto-airs aswell), and lacquer for solids (an acrylic lacquer is probably the best to go on these, though if heard of people using DEFT nitro, which probably meand you could use behlen nitro). Though ideally you'll want to apply a polyurathene coat for solids because its more durable, in the long run...
Auto air and createx are cheap but good paints...
Thats my random input into the forum, for today.