I didn't have pictures of them earlier, so here are a couple I have tied. Colors can be what ever you want, such and Red/White, Black/Yellow. The head (deer hair) and long tails (Big Fly Fiber) capture a lot of air and release bubbles as they go through the water making a lot of 'noise'. Because the tails are synthetic they don't absorb water and are easy to cast.
iaflyfisher