Oh, I like that. Love the color combinations, the straight-forward-ness of it. I am slightly distracted by solid diagonal line of brown and the ones on the left that form an "arrow head". Imo, it would help to break those up with a bit of the blue.
I've been working on a few in a similar vein, I'm glad to see yours is so successful.
NTL - I hadn't noticed the 'arrow' effect - thanks for your perceptive observation: I do see what you mean.
Nufocus - Thank you. A long way to go to Seurat, but I do really appreciate the encouraging words!