The Collaborative International Dictionary of English v.0.48:

Kaleidoscopic \Ka*lei`do*scop"ic\, Kaleidoscopical
\Ka*lei`do*scop"ic*al\, a.
   Of, pertaining to, or formed by, a kaleidoscope; variegated.
   [1913 Webster]

WordNet (r) 3.0 (2006):

kaleidoscopic
    adj 1: continually shifting or rapidly changing [syn:
           kaleidoscopic, kaleidoscopical]

Moby Thesaurus II by Grady Ward, 1.0:

94 Moby Thesaurus words for "kaleidoscopic":
   able to adapt, adaptable, adjustable, alterable, alterative,
   amorphic, amorphous, anarchic, baggy, bicolor, bicolored, blobby,
   blurred, blurry, changeable, chaotic, characterless, checkered,
   colorful, colory, confused, crazy, daedal, dichromatic, disorderly,
   divers-colored, ever-changing, featureless, flexible, fluid,
   formless, fuzzy, harlequin, hazy, impermanent, inchoate,
   indecisive, indefinite, indeterminate, inform, lumpen, malleable,
   many-colored, many-sided, medley, metamorphic, misty, mobile,
   modifiable, motley, movable, multicolor, multicolored,
   multicolorous, mutable, nondescript, nonuniform, obscure,
   orderless, parti-color, parti-colored, permutable, plastic,
   polychromatic, polychrome, polychromic, prismal, protean,
   proteiform, resilient, rubbery, shapeless, shot, shot through,
   spectral, supple, thunder and lightning, transient, transitory,
   trichromatic, trichromic, tricolor, tricolored, two-tone, unclear,
   undefined, unordered, unorganized, vague, variable, varicolored,
   variegated, versicolor, versicolored