There's probably not much to be profited from further analysis of the obvious color banding within it, then...
BTW, unlike the simply darkened and contrast-reduced "hidden" image in #499, this one was "inverted" (IOW, a "negative") -- easily recovered thru hexidecimal calcuation -- and, even more simply recoverable by using the "Invert" function of an open-source IPP program like "NIH Image"...
TXnMA
No, only the text on that image was part of Q post 1543.
I got it from the Neon Revolt thread, not sure where he got it. Suspect he found it on 8ch, a post by an anon?
A right click and "view image info" does not help identifying where it came from.