How Many iridology eye color type?   About 3 color: Brown iridology,Blue iridology,Mixed iridology 1 Brown iridology,White collerette (autonomic nerve wreath), solid blue or gray/blue color with no discoloration or psora (pigments). Related to the primary colour blue and the spiritual aspect of health. Strong tendency towards Western phlegmatic (water) constitution and Chinese water, metal constitutions. Read Tendencies This is …