Has anyone used white to airbrush anything, just wondering if it works okay if you airbrush white over a darker color? Any help out there would be appreciated.

Wilton has that whitening stuff for fondant, I've mixed it with vodka and used it for a tad bit of accenting. Seemed to work ok. Try it on a test piece of fondant before you do your actually project.

I know you can buy airbrush coloring that is white, but wondering if covers a darker color okay when airbrushed on?

I use the white airbrush color ALOT! I love that it helps to tone down the color that is a bit too intense... when sprayed on dark colors, it does mute them some, but doesn't lighten it to much. Just remember to shake the bottle alot & the spray is a bit thicker than reg. airbrush, so watch for clogs. You have to clean your airbrush asap when using cause of build-up. But over all I love the stuff! HTH!

Yep, I have white ab color. Also keep the white pearl on hand. That stuff is great!