Crappie become shallow feeders at night. Daytime fishing should be on a steep breakline adjacent to a flat. They will move into as much as 3 feet of water at night time. Use tip ups to locate, then drop a jig. As for colors, well you and many others are hooked
90% of the lures are designed to catch the fisherman, not the fish. You should look to vibration and flutter versus colors. Have you ever dove and taken a look at what you see? I know of no fish that use high powered lights to feed
Try PK Lures as they have plenty of vibration and simulate wounded baitfish, and more importantly, something many fish have not yet seen.