Though I have not been able to ponder over the panel design by seeing it against the sky (as @Breezin addressed) and then iterate the design a few times and I sense that the sail designer might have set his mind on this one, I do say that I today share @makatakam opinion. My subjective view is that a a small zip of colour could add to the artistic and serve as a visual spice. E.g., the Tramontana is mainly a black and white kite, no doubt, but the red wingtips are a complement to that. A possible Djinn design preserving much of the current design could be like a piece of steel that is cooling down. The corners and edges are cool dark steel gray (or black), the sides are barely glowing reddish gray, but in a few small grooves/cracks you can still see that it is still glowing inside (would work with other inner glow colour scales as well while preserving the darker grey like part). On the other hand, inner glow stuff is not as original as the current Djinn design is. …and, single theme designs without any colour like HQ Infinity and Zebra (have not seen one though) work as well. Choices, options, choices, choices, options, decisions….