Poppy Paint is basically the same and it's about $9 for 30ml vs. $9 for 15ml. I've used the Poppy Paints and have met the maker of the product.
http://www.shorecakesupply.com/product/poppy-paint/
You can also easily make your own, too, if you like to experiment. Edible luster dust or petal dust mixed with a bit of confectioner's glaze, thinned a bit with high proof clear alcohol [Everclear is best, but vodka will also work]. You can change the consistency with adding a bit of food grade/edible glycerine.
I used airbrush colors straight from the bottle with no additives for painting this sugar skull topper. I used a stencil, and I'm not a painter, so I can't swear that the consistency will work for you. Not sure my picture will post, but I'll give it a shot.
http://www.cakecentral.com/gallery/i/3377654/sugar-skull-cake-topper
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