WordNet sense 1 (a collection containing a variety of sorts of things):

assortment, miscellanea, miscellany, mixture, potpourri, smorgasbord, variety, salmagundi, mixed bag

WordNet sense 2 (consisting of a haphazard assortment of different kinds (even to the point of incongruity)):

assorted, miscellaneous, mixed, sundry

WordNet sense 3 (consisting of elements that are not of the same kind or nature):

heterogeneous, heterogenous

WordNet sense 4 (having sections or patches colored differently and usually brightly):

calico, multicolored, piebald, pied, varicolored, multicolor, multicolour, multicoloured, painted, particolored, particoloured, varicoloured

WordNet sense 5 (having color or a certain color; sometimes used in combination):

colored, coloured

WordNet sense 6 (make something more diverse and varied):

variegate, vary

WordNet sense 7 (make motley; color with different colors):

parti-color