I've ported to Xfwm some Openbox themes from obtgen by Fikri Omar, you can see the original here: https://github.com/fikriomar16/obtgen
Themes come with 5 similar variants and "noTitle" versions. It's the first release, so it may have some small issues. I'm planning to add more variants in the future. If you want a specific color palette, let me know.
- added 'NF' (no frame) versions, without colour borders
(yes, those typos and pink Comic Sans font in the preview image are intentional)