piebald

manifold, multifarious

multiple, multiplex, myriad

disparate, divergent, diverse, sundry, various

chaotic, cluttered, confused, disarranged, disarrayed, disheveled (or dishevelled), disordered, farraginous, jumbled, littered, messed, messy, muddled

amalgamated, blended, combined, commingled, commixed, conglomerated, fused, incorporated, intermingled, intermixed, merged, mingled

composite, conglomerate, hybrid

unclassified, unsorted

shaded

checkered, motley, multicolored, polychromatic, polychrome, varicolored, variegated

blotted, brindled (or brindle), calico, specked, speckled, streaked

colored, colorful, pigmented

dotted, peppered, sprinkled

stippled

discolored, dyed, marked, stained

flecked, streaked

bespattered, spattered