ok, I just purchased an airbrush and compressor-
Question: what is the best medium to mix the food coloring - vodka- or lemon extract/juice? Also, I normally use the Wilton Gel colors- are those to thick to mix for coloring? Would AmeriColor be a better product?

I use vodka..it works for me..
Edna

I personally use airbrush colors, it makes life so much easier. If you're going to switch to americolor they also make airbrush colors.

I use airbrush colors, gel colors diluted with vodka, and petal/luster dusts diluted with vodka. Just be sure to clean your brush well after you are done.