There's a closed pull request on the void-packages repository

New package: old-ubuntu-human-theme-1.0.0
https://github.com/void-linux/void-packages/pull/23522

Description:
Description from **[upstream](https://github.com/luigifab/old-ubuntu-human-theme)**:

The old Ubuntu Human theme, for GTK 2.24 / 3.20-3.24 / 4.0.
This is an adaptation of [Clearlooks-Phénix](https://github.com/jpfleury/clearlooks-phenix) theme, a GTK 3 port of old GTK 2 / GNOME 2 [Clearlooks](https://en.wikipedia.org/wiki/Clearlooks) style. This is also a continuation of [Human Quarny](https://www.mate-look.org/p/1013593/) theme.