Either stock or painted but with a graphic, Ducati Logo, something to break it up. Carbon wrap? Since we are talking aesthetics, while you are spending some time take ten and remove all the frame stickers.
I'm with the guys above. The red looks good and different, (which is always good for me). But definitely needs an accent. Your favorite decal racer sticker, have a shop make up a custom decal, or DIY decal or in paint. Something simple that just accents to break up the red....But red certainly better IMO....Way to look for something a different!
I'll have to vote for the stock look, the black seems to complement the red. Did you paint your skids black? Mine are silver, I have considered painting them black or red. I really like the wheel stripes, where did you source those?