Papirus

Papirus is a free and open source SVG icon theme for Linux, based on Paper Icon Set with a lot of new icons and a few extras, like Hardcode-Tray support, KDE colorscheme support, Folder Color support, and others. Some software uses an absolute path instead of the icon name in a .desktop file or in the source code which makes them unthemable. To deal with hardcoded application icons we recommend using hardcode-fixer. Papirus supports most of the applications in the list. If hardcode-fixer doesn't support your favorite app yet, please open an issue here or edit your .desktop file manually. To fix icons of running Steam games, you can use Steam Icons Fixer script, that will connect all icons available from our icon theme with your installed games.