The background seen in the haunted and sunken ship, The Flying Duckman. Maui Mallard (Donald) goes there to find the remains of the one that can help him find the Shabuhm Shabuhm idol that is missing from the island. You may recognize this background if you have played some certain old hacks, anyway, surprisingly, it only uses four colors.
Palette 3. BG1, BG2 and BG3 slots. Credit would be great, but is optional.