When I was thinking about what to wear under China Glaze Luxe and Lush, I wanted a dark color since they seem to show the flakes best. On the other hand, I didn't want to use black just because I've seen it worn that way a lot. Instead, I decided to go with a dark red.
The base color I went with is Borghese Bella Berry. Then, I added just one thick coat of Luxe and Lush. It's thick enough that I had to kind of pat it on to avoid dragging the particles back off.
This picture's a little blurry, but it shows the colors of the flakes in Luxe and Lush better. The shape of them reminds me of pieces of broken glass, which makes me wonder what it would look like over a lighter color, like maybe a light brown or tan. I'd also really like to see a polish with similar flakes, but in blues - maybe for winter.