I have a few polishes from Polish Me Silly (formerly Lush Lacquer). When I came across the thermal color-changing polishes I threw a few minis in my cart. Grape Intentions looks like a sweet shift between purple and pink. This is two coats of the polish on top of a basecoat with a topcoat.
Standard bottle shot
Purple = Cold
I was really hoping for the purple to be around most of the time but this shifts pink with warmth, I always have freezing hands so imagine my surprise when they weren't usually purple. I could have used another coat or two as there was still a pretty visible nail line.
Pink = Warm
I created a stamping decal with Bundle Monster Plate 414 with Color Club Abyss, On the Rocks, Avon Fuchsia Fun and Grape Intentions. I didn't wait long enough to push it on the nail and tore it so sorry for the bad shots.
While the polish was pretty and interesting with all the color changes, it did bleed a little. I may try this again with a pale color of undies and see how well the color shifts. You can purchase the mini bottles from the Etsy store for $5.50 a piece.