Permission to distribute a derivative of Discord GNOME Theme

Hi! I’m working on a modified version of your Discord theme for GNOME. I’ve made a few changes to the styling and arrangement of elements to support languages and BetterDiscord, and I’d like to preserve and distribute my version as a separate theme. I noticed that the repository doesn’t yet have a license, so I’d like to get your permission before publishing and distributing a derivative work based on your theme. Would you mind if I published it in the public domain, with attribution and a link to your repository? Thanks!