Woven body nymphs, like the venerable George's Brownstone, were invented in order to produce a life-like two-tone body. Golden Stonefly nymphs, for instance, have a strikingly yellow underbody. Another way to get the same effect is to layer two colors of soft open-cell foam around a horizontal needle. Then, once the body blank is made, add some wire weight to a hook, wrap the wire with a soft gingery hackle and then mount the foam body. http://montana-riverboats.com/Pages...Sandys-Brownstone/Sandys-Brown-Stone-top.html tails: yellow rubber leg sewed into the foam body body: Two-tone soft open cell-foam tied onto a beading needle thread: brown flat waxed nylon hook: straight eye hopper hook weight: brass wire wrapped and super glued to the hook hackle: soft ginger *I make the foam body blanks by dying cheap cleanup sponges with rit dye. Then I cut them up with a round, rolling fabric cutting knife (from the ladies sewing store).