From The Collaborative International Dictionary of English v.0.48 [gcide]:
Multicolor \Mul"ti*col`or\, a. [See Multi-, and Color.]
Having many, or several, colors.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
multicolor
adj 1: having sections or patches colored differently and
usually brightly; "a jester dressed in motley"; "the
painted desert"; "a particolored dress"; "a piebald
horse"; "pied daisies" [syn: motley, calico,
multicolor, multi-color, multicolour, {multi-
colour}, multicolored, multi-colored,
multicoloured, multi-coloured, painted,
particolored, particoloured, piebald, pied,
varicolored, varicoloured]