The fun in linux is that you can actually change any aspect of the desktop and more…
In this tutorial we combine parts of the Sardi icons with parts of Papirus Dark icons. You can follow or change the choices I made.
Endresult
Requirements
Download the icons
Now follow these steps to learn how to mix these icon themes
OR
just download all the extra made Sardi icon themes from google drive. You will need the Sardi icon themes from Sourceforge too since they depend on each other.
Extract the compressed files and put them in the hidden folder .icons.