Pink and white always good for crappie and gills. I have hot bites with blue, black and red as well. Play with the colors and you might find new confidence. Lotsa times with an up bite color might not be as important as silhouette. Jameis looks like nymphs, Maki looks like a cricket or a gob of blood worms, wedgee, spikes etc look like a blood worm perhaps. Swordtail grubs like a minnow or perhaps a midge or mousee. I know fly tiers use a lot of tan, green and browns for nymphs, as well as black red and copper wire.