About 20 years ago I borrowed my son's black light to see how my favorite jig color combinations looked and the best colors had two or more colors that fluoresced under the light. Multiple fluorescent colors on a jig give fish a better chance to see my jig. I put UV Blast in all my powder paints and jigs are much brighter now, I want my jigs to stand out and these do. When I wrap bodies with palmer chenille I wrap 2-3 colors together at one time to create a variegated look.