Frankly Frosty is described as a "light grey taupe." It's a light-medium, gray-leaning taupe with a matte finish. It had semi-opaque pigmentation, as the texture was firmer and was harder to get dislodged from the pan. The color lasted for eight hours once on. ColourPop Epic (LE, $4.50) is warmer (90% similar). Disney by Sephora What's-It (LE, ) is lighter (90% similar). MAC Fogged In (LE, $17.00) is darker (85% similar). ColourPop Girl Crush (LE, $6.00) is darker (85% similar). Too Faced Clove (LE, $16.00) is darker (80% similar). KVD Beauty Sarah (LE, ) is darker (80% similar). bareMinerals Tranquil (LE, ) is more shimmery, lighter (80% similar). LORAC Silent Mary (LE, $19.00) is darker, cooler (80% similar). Marc Jacobs Beauty The Concrete (LE, ) is darker, warmer (80% similar). See comparison swatches / view dupes side-by-side.
FURTHER READING: Formula Overview, which is a detailed review of the range as a whole.
M·A·C Eyeshadow is a highly pigmented powder formula that applies evenly and blends well. Suitable for use either wet or dry, it's available in a wide variety of textures and finishes.