Del Sol Sale

Color-Change Nail Polish Special
I have yet to try this brand as well but who doesn't love color changing polish?!  This changes with the sun and they have several different colors available.  Bottles do run $10 a piece so it's a little pricey but since you technically get 2 colors in one bottle, it's more like $5 a bottle.  At least, that's what I tell myself ;]

Del Sol is available on their website here.