I remember watching a playthrough of Super Mario Land 2 DX when it was released, I was absolutely amazed by how beautiful the colours are in this hack, and I really appreciate every bit of the hack's design.
There's one thing I've noticed during the playthrough on version 1.0 release of this hack: In one of the stages of Pumpkin Zone, there are Goomboos (called Boo Goombas in the Japanese version) in which are coloured brown instead of grey and white (unlike any boo-ified enemies). They're the ghost versions of Goombas. I always wondered why they were coloured brown in this hack instead of using the Boo palette? Has it been changed in newer versions since then? Just curious.