The term 'COLORFUL PARTS OF THE EYES' can be summarized by the crossword solution UVEAS, which is an acronym for the uveal tract. The uveal tract is a part of the eye that consists of three layers: the iris, the ciliary body, and the choroid. The iris is the colored part of the eye that controls the amount of light entering the eye, while the ciliary body is responsible for focusing the eye and the choroid provides nourishment to the retina. Together, these three layers make up the colorful parts of the eyes.