There are 5 different themes you can adjust in Xfce: the window decorations, the GTK+ interfaces, the cursors, the notifications, and the icons. You can find themes on various website, here are some of them:
Wallpaper websites with good quality and high resolution images:
~/.local/share/themes/<theme_name>/xfwm4/*.svg) it's better to install the librsvg package
You can find more information about how to create a window manager theme here.
A GTK+ theme is the theme of the toolkit (buttons, textfields, etc). Most of the GTK+ themes need their own theme engine, make sure you have that theme engine installed with the same prefix as the GTK+ toolkit. To install and use a theme, follow these steps:
gtk-update-icon-cache -f -t ~/.icons/<theme_name>to create an icon cache 1)
~/.icons/<theme_name>/scalable) make sure you have librsvg installed
When you have icon theme problems, it's also recommended to install the