This reminds me...
There's a small (undocumented) console command in SLADE 3 which converts that lump to a palette: lightspsxtopalette. There are quite a few limited-use commands like this. :) --Gez 20:24, 2 December 2013 (UTC)
- Would have saved me about an hour and a half of flood filling rectangles, but oh well ;) --Quasar 22:22, 2 December 2013 (UTC)