chromodiagnosis

chro·mo·di·ag·no·sis (kro″mo-di″əg-noґsis) [chromo- + diagnosis] 1. diagnosis by change of color. 2. diagnosis of functional derangements by observing the rate at which coloring matters, such as methylthionine chloride, are excreted. 3. diagnostic examination made through colored glass or sheets of colored gelatin.