Oxford Dictionary
multicoloured
multicoloured |ˈmʌltɪkʌləd |(also multicolour, US multicolored ) ▶adjective having many colours.
Oxford Thesaurus
multicoloured
multicoloured adjective kaleidoscopic, psychedelic, colourful, multicolour, many-coloured, many-hued, rainbow, jazzy, particoloured, varicoloured, variegated, harlequin, motley, prismatic, polychromatic; pied, piebald, skewbald, dappled, brindled, brindle, tabby; N. Amer. pinto; informal (looking ) like an explosion in a paint factory. ANTONYMS monochrome.