I've found that you can add new color palettes to Xfce Terminal by putting .theme files in /usr/share/xfce/terminal/colorschemes/. Could we have it check other directories as well, such as ~/.config/xfce/terminal/colorschemes/? That way, non-root users can create and save color palettes.
Please try https://git.xfce.org/apps/xfce4-terminal/commit/?id=f7153e992993e7fbe38f8a023664f7f53b1a380f
Fantastic! I'm trying it out and I love it!
Great! Thanks for the update.