I'm trying to make a beer mug cake and I want to use fondant. My airbrush kits hasn't arrived yet, how do I make the fondant look like beer? What colors should I use? If I dye fondant tan, then spray with Orange and yellow color mist spray would this work?[/u]

What about painting it? You can get that uneven sort of "flowy" liquid look pretty well by just painting over the fondant with vodka-diluted colors.