The Collaborative International Dictionary of English v.0.48:

Puce \Puce\, a. [F., fr. puce a flea, L. pulex, pulicis.]
   Of a dark brown or brownish purple color.
   [1913 Webster]

WordNet (r) 3.0 (2006):

puce
    n 1: a color varying from dark purplish brown to dark red

Moby Thesaurus II by Grady Ward, 1.0:

63 Moby Thesaurus words for "puce":
   Titian, Titian-red, bricky, cardinal, carmine, carnation,
   carnelian, cerise, cherry, cherry-colored, cherry-red, crimson,
   damask, ferruginous, fiery, fire-red, flame-colored, flame-red,
   flaming, glowing, gules, hot, incarmined, inflamed, infrared,
   iron-red, lake-colored, laky, lateritious, lobster-red, lurid,
   maroon, port-wine, red, red-dyed, red-looking, reddened, reddish,
   reddish-amber, reddish-brown, rubicund, rubiginous, rubric,
   rubricose, ruby, ruby-colored, ruby-red, ruddied, ruddy, rufescent,
   rufous, rust, rust-red, rusty, scarlet, stammel, tile-red,
   vermilion, vinaceous, warm, wine, wine-colored, wine-red