Not that I know of, but I would check liveaquaria.com. And that's the thing with their colors.
I read that, as a security measure, while within the "size range" of a dwarf Angel, they will mimic. But when their size grows past the point of the dwarf size, that's when they supposedly change. But mine is about 3 inches and he's getting black and orange on his fins, gills and other areas, where a few months ago he looked like yours.
So to sum it up, I don't know to be honest. I just am in for the enjoyable ride after reading too much. .
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