(Here, I've concatenated all the data starting with lengths, then inner, then outer colors in the order of the pattern. This is just ONE of a many ways of concatenating the data. Just for demonstration purposes, I used a base 58 alphabet here and use ? when the value goes beyond 58. By no means is this a complete list).
Have you tried using the inner shape as the third bit (skinny line or blob of paint)?
Each inner flame is either a blob or a line.
Inner Color, Outer Color, (Line/Blob)
8 variations of flames taken in pairs. 76 pairs of 64 variations.
I still think we are looking for a BIP38 encrypted key starting with 6PR.