The Lospec website has a large number of user submitted colour palettes, which are downloadable in a variety of formats:
At the moment, the only way I can think of to import to Pro Motion is to download a palette as a PNG, open it as an image then do Colors > Save Palette to save in .pal format for future use.
It would be great if there was an easier way to import these palettes!
There was a discussion back in December about importing Gimp palettes specifically, so this may already be something you’re working on
I know this thread is pretty old but having a small issue. When I try to import a Gimp colour palette into Cosmigo, (created using Cyotex colour palette), it’s all black. I even tried using the preset Gimp colour palettes that came with Gimp, no luck. For some reason, the ones from Lospec seems to work so I’m not sure what I am doing wrong. But when I import the palette file that I created in Cyotex to Gimp, it’s fine. @jan.cosmigo