Pull in themes via x11-themes/murrine-themes

Packages describing “themes” as local USE flag

Package “themes” Flag Description
x11-themes/gtk-engines-murrine Pull in themes via x11-themes/murrine-themes
sys-boot/grub Build and install GRUB themes (starfield)
www-apps/wordpress Installs themes (including default theme)
mate-base/mate Install MATE Desktop's themes; if you use other themes, you can disable this to spare some space and time.
games-arcade/lbreakout2 Install additional themes
x11-wm/e16 Install the official E16 themes using x11-themes/e16-themes
x11-wm/pekwm Install additional themes
media-gfx/album Install optional themes

All packages providing a “themes” USE flag (3)