I hadn't thought about that yet. But it would be quite handy. Ase files are a lot different than the simple palette format I created. So it definitely wouldn't be trivial. But it looks like other people have had success decoding adobe ase files, so I think it could be doable.

So, I couldn't resist attempting this immediately after your comment. I wasn't able to get it working in the plugin yet, but I spent a few hours looking into it, and was able to cobble together an in-browser utility to convert .ase files to the .sketchpalette format used in my plugin. It works for me, but it's pretty hacky, so your mileage may vary. I'll see if I can get it to a point where it can be rolled into the main plugin.

https://github.com/andrewfiorillo/ase-to-sketchpalette

Great suggestion to make this plugin even better. You have my vote!