I've been looking into the BC palettes now. I'm hoping to alter JCS's palette used for the 'Remap tileset palette' feature to work with BC's colours. Right now I'm trying to get a clear map of which colours (of objects) are stored where. It looks like BC's UI colours (energy meter, battery counters etc.) are mostly at the lower half of the palette. The upper half is available for tile colours. So that's quite different from JJ2's palette, where the sprite colours are all in the first few rows.

Once I understand BC's palette I can write some short introduction to it just like we had with JJ2's palette in the JCS.chm file. And then everyone can make their own tilesets! The bmp/pcx to j2t convertion machinery is all fully working Except for the remap palette feature, that is