Thanks! I'm glad the game continues to inspire.
There are two ways to make a palette in Rexpaint - one is to press the + button to make a new one, then double click the colour tiles to change them, then hit the S to save it as a palette. The other is to go into the data folder and start adding them as text files. Find an existing palette to work out the format required. This is the most useful way to transfer palettes from other programs like paint.net, and also a good way to clone palette files.
The manual txt in the root folder also has a ton of helpful info. Be sure to check that for a ton of useful tips and export shortcuts.
































