Using a Color-Grad to add color to the sky can often look even better when a complementary tint is added to the foreground. Designed to be used together with a Color-Grad in this manner, or to add a bit of color interest on their own. Complements come in 3 color series: Blue for use with Tropic Blue, Cyan, Cool Blue, Grape, Blue and Twilight; Red for use with Plum, Magenta, Cranberry, Pink, Red, Skyfire, and Twilight; and Amber for use with Chocolate, Sepia, Coral, Tangerine, Tobacco, Straw, Antique Suede, Skyfire and Sunset. Each series is available in two grades. Grade 1 provides milder tones; Grade 2 is for more dramatic color.