For a soft, almost creamy look on the Xfce desktop, the Theme “Victory” by newhoa is the ideal choice. It consists of 5 variants in different brightness levels for windows and window frames, as well as an extensive icon set. Installation is very simple:

As a regular user, you clone the corresponding git repository and store the data in your user directory under .icons or .themes.

git clone https://github.com/newhoa/victory-icon-theme.git ~/.icons/victory-icon-theme/

git clone https://github.com/newhoa/victory-gtk-theme.git ~/.themes/

The theme can then be activated under Settings appearance. In the same window there is also a tab for Symbols. To select the appropriate window frames, go to Settings Window management. Of course, the changes can also be combined in different ways and reversed in the same way. Oh, and a theme variant for HiDPI displays is also included!