Each hand-rolled stick contains a unique combination of traditional and synthetic pigments, combined to bring out their inherent beauty. Colors lay down with minimal resistance allowing several layers to accrue without becoming too thick. - Mount Vision Soft Pastel Set - Thunderstorm Gray, Set of 25Mount Vision Pastels, THUNDRSTRM GRY 25/ST - This set contains Midnight Blue 540, Midnight Blue 541, Midnight Blue 542, Midnight Blue 543, Midnight Blue 544, Thunderstorm Violet 670, Thunderstorm Violet 671, Thunderstorm Violet 672, Thunderstorm Violet 673, Thunderstorm Violet 674, Thunderstorm Red 680, Thunderstorm Red 681, Thunderstorm Red 682, Thunderstorm Red 683, Thunderstorm Red 684, Gray Violet 230, Gray Violet 231, Gray Violet 232, Gray Violet 233, Earth Gray (Green) 421, Earth Gray (Green) 422, Thunderstorm Blue 640, Thunderstorm Blue 641, Thunderstorm Blue 642, and Thunderstorm Blue 643.