In this playlist the Sardi icons are central. There are many scripts included to make the sardi icons your own personal icon set. You can change colours and mix different icon themes. How to make your own personal icon theme is explained in these movies.
The Sardi icon collection can be downloaded at sourceforge.
https://sourceforge.net/projects/sardi/files/
You can read more here. This is just the playlist from Youtube.
[youtube_channel channel=PLlloYVGq5pS4xeU9zECB-VXL8ZtlEOqrY]