Binh also uses transparent airbrush colors from Golden. I just bought
some from him a few weeks ago.

I think Brian is correct. I use a lot of color with an airbrush. I
use mostly dyes, but acrylics will "splatter" leaving tiny bumps.
Thinner paint will flow better. Instead of water, however, choose an
airbrush paint extender to thin the acrylics. Generally, airbrush
paints, as opposed to tube acrylics, will flow better.

Joe Fleming - San Diego