I have a Dragon space shuttle I bought for my kids to do but I am going to use it to practice with my new airbrush. One of the suggested paint colurs is flat base which is mixed with white or black. What is flat base ? pls. email me at [email protected]

Flat base is a liquid you mix with gloss colors to make them flat. Most colors that you need in flat come flat already, now so I don't see a need for it anymore except if paints are hard to get in your area.