Are you sure it isn't someone playing with filters?
and color substitution?
Taken with a r'BG filter with the Alpha- band removed and color-shifted to the southwest. Then the 1400 angstrom peaks removed, the remainder smoothed, pixilated, carbonated, and reconstituted from dehydrated comets.
And some blue watercolors splattered across the printed results, then scanned, uploaded, bypassing the Delta C endoder, and sent out to the world with the remaining
To Daddy frum Yor daugher
left off the bottom.
Always glad to help. Semper Fi, and the "Fi" is Fido.
Arf