White
also: pale; blanched; sallow; pallid; waxen; spectral; translucent; albino;
Grey
also: dust; stone; pepper;
Black
also: coal; slate; dusky; ebon; shadow; murky;
Tan
also: flesh; khaki; cream; tawny;
Brown
also: henna; russet; sepia; chestnut; cocoa; drab; bronze;
Red
also: terracotta ; rouge; carmine; fire-engine; ruddy
Orange
also: pumpkin ; rust ;
Yellow
also: sunny; amber; saffron; hay; straw; platinum;
Green
also: viridescent; grass; jade; forest;
Blue
also: turquoise; cyan; ultramarine; royal; aqua; aquamarine;
Purple
also: berry; amaranthine;
Pink
also: flushed; candy; cherry blossom; petal pink ;
—–
source: http://ingridsundberg.com/
—–additional synonyms added by me