Chartreuse and red are popular colors for Chum Salmon and this fly, modeled after the Alaskabou type flies, was a big Chum Salmon catcher for me last fall. The tented overwing, helps keep the marabou from wrapping around and fouling on the hook. If you haven't fly fished Chum Salmon, I think you are missing something. They are pretty aggressive and great fighters. They'll often strike at a fly, even on their spawning runs.