For a rich autumn color palette, choose pansies in vibrant hues like orange, gold, red and deep purple or bicolored combinations, avoiding pastel pinks, blues and pale yellows. If you can find them, try very dark purple to velvety black blooms like ‘Black King’ or ‘Black Beauty’. Combine them with coral bells (Heuchera spp.), another cool-season favorite, for a long-lasting display.