http://www.testors.com/brand_category.asp?brandNbr=4Thats the web site for Testors Model master paints. You can look at the color charts to see all the differant colors they have. I have been modelling for a few years now, and I like their paints. They airbrush nice, brush nice, thin easily, etc. Also, there are more colors then I am sure you are aware of. My local hobby store only carries the very basic Model Master paints. Generally I buy mine online at GreatModels.com or Internethobbies.com. For thinning, as the previous poster said, you have to experiment a bit. My own rule of thumb is to thin the paint until it is the consistency of milk. Dip a toothpick in some milk and observe how thin the paint is, then mix your paint and thinner to the same consistency. If you over thin the paint, dont get upset. The thinner dries pretty fast, so when you airbrush it, it should atomize pretty quickly. Just instead of trying to apply one or two normal coats, apply 3 or 4 light coats until the model is covered. Depending on the color your painting, and the color of the kit, you might want to first spray a thin coat of primer on the model to reveal and areas that need attention like sprue marks, casting seams, gaps, etc. Also, the paint will stick better to primer then directly to plastic. Plasticote makes decent primer right out of the spray can that seems to not cover up details. Hope that helps. Have fun!