dappled(also dapple), dotted, flecked, freckled, mottled, specked, speckled, spotted, spotty, stippled, variegated

spangledmarbled, moiré(or moire), veinedchromatic, colored, colorful, motley, multicolored, multihued, polychromatic, polychrome, prismatic, rainbow, varicoloredblotched, blotchy, piebald, pinto, roan