Below are examples of the variations of Koa wood.  Your frame could look like any of the examples below or none of them.  Please keep in mind that wood is a natural product.  Color and grain will vary from the samples shown and from frame to frame.  Of all the woods, Koa varies the most in appearance.  It is a unique wood with grain that varies from a golden oak to reddish brown to dark brown with streaks of darker browns and black.