I need to airbrush the tye dye look of the 60's on a cake.Where do I start?What colors do I do first? Any help would be appreciated!
Laurel 
Get some images of tie-dye and see what they look like. I'd think you would do the lighter colors first, then darker after that, or the lighter ones won't show up. Not that you probably didn't already think of that
I do tie dye on buttercream. Is that what you are looking for? You ice the cake, then do concentric circles of color leaving a little white space between and then sort of drag the offset spatula through the colors from the inside out. You have to play with it a bit to realize what colors will look good. The best warning is not to use orange and purple together. When you drag the colors that ends up too brown and yucky. If you do shades of green, blue and yellow or another similar color "group" you will have more luck. I will look to see if I have any pictures of one I can post under my name.
We did tie dye in a Bronwen Weber airbrush class. Start with maybe 4 colors plus white. Spray circles of the first color in different sizes, randomly placed. Come back with the second color and spray a ring around the first circle, working close enough to get the true second color but far enough away for the two colors to blend a bit (real exact here, LOL). Ditto third color if you wish. Then fill in the background - dual action brush is good here because you can lighten up on the pigment for better shading and filling. Then come back with white and make crosses of two or three "strikes" across each circle and then give a light spray of white over the entire surface. The attached photo is someone else's work that I pulled out of the trash 
. I threw mine away before getting a photo, and someone dumped coffee on mine, sooooooo I went dumpster diving for a sample 
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Oh I like that ibmoser.....I may try that!!!!Thankyou sooo much!!!!
I was asked to put tie dye on a cake.. my first thought.. was to use a white ganache, take bowls and color a bunch of different colors them pour them strategically over a light coating of white, then run a knife or toothpick to swirl while the ganache is still warm.. I'm hoping it works! Trying it tonight 
I'm going to airbrush a black outline of jimmy Hendrix on top of the tie dye..
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