If you're interested, this fork adds support for exporting ASE (Adobe Swatch Exchange) files using the -a flag. These files can be opened in Adobe CS2+ software and seems to be supported fairly widely as a swatch library format elsewhere.
Add ASE export function
Document write_ase function
Implement -a flag for ASE output
Finalize ASE export functionality
Merge branch 'master' of git://github.com/99designs/colorific
Sorry about the wait, I'll see if I can find someone to test. Will get back to you soon.
Cool. I've been testing using Adobe CS5. From what I've read it appears they should be compatible from CS2 and on.