Possibly, and it could that the copying enhanced the darkness. But I suspect strongly that the artist is one of many who simply prefer the combos he created. Many do. Its like cooking... Some like it hot, some cool. Some like the taste of black. Such is for each to decide. My main drive is to try inducing new artists to first delve into clean use of colors & not act like a printer, which uses black to darken & white to lighten. Artists taste... Feel. Enhance. Improve. I see that painting as it could have been and am saddened by the loss.