Here is what I did; I filled a small spray bottle half way full of rubbing alcohol then dumped in a little of the Stampin' Up's Champagne mist shimmer paint. I thought to add just a little bit, test it, and if I wanted more shimmer I would add more of the paint. I got lucky and was pleased with what I added the first time. You do have to keep shaking the mixture because it does separate.
116806 Champagne mist
116854 Frost White
116807 Platinum
If you don't want to mix your own up; Stampin' Up is offering Smooch Spritz in their current Summer Mini Catalog. Smooch spritz comes in Gold Glow, Silver Foil, Vanilla Silver and Log Cabin and are $4.95 each.