Linux Themes

Tutorials

archwiki: qt/gtk	https://wiki.archlinux.org/title/Uniform_look_for_Qt_and_GTK_applications#Breeze
archwiki: dark mode	https://wiki.archlinux.org/title/Dark_mode_switching

Locations

/usr/share/themes/	installed themes
~/.themes/	user themes
~/.config/gtk-3.0/settings.ini	set GTK themes, icons, etc.
~/.config/qt5ct/qt5ct.conf	set Qt themes, icons, etc.

Themes

lcarsde

https://lcarsde.github.io/manual.html

Test Applications

Test Applications:
    - firefox
    - evolution (new task, calendar)
    - pcmanfm    # gtk
    - keepassxc  # qt

Managing Themes

You'll need to set themes for both GTK and Qt.
Gtk themes are set in ~/.config/gtk-3.0/settings.ini
Qt themes are set in ~/.config/qt5ct/qt5ct.conf using qt5ct

pacman -S lxappearance      # gui conifigure gtk-themes

pacman -S qt5ct               # override gtk themes
aura -A qt5-styleplugins      # adds support for gtk2
pacman -S qgnomeplatform-qt5  # (alt) adds support for gtk2

pacman -S breeze            # qt-theme && icon-pack
pacman -S breeze-gtk        # theme

themes

# GTK
pacman -S breeze-gtk

# QT
pacman -S breeze

icons

breeze-icons
faenza-icon-theme

lxappearance:
  - choose theme: (ex: Breeze-Dark)
qt5ct:
  - choose style: gtk2  # will use lxappearance theme

export QT_QPA_PLATFORMTHEME=gtk2  # Qt apps use 'gtk2'
# NOTE: you can also set this to 'qt5ct', which allows you to override QSS for all apps.