Set GTK_THEME in .profile or whatever

home/dot_profile

@@ -0,0 +1,28 @@
+export PATH="${HOME}/.local/bin:${HOME}/.cargo/bin:${PATH}"
+
+# Make XDG_RUNTIME_DIR, required for some sessions
+if test -z "${XDG_RUNTIME_DIR}"; then
+    export XDG_RUNTIME_DIR=/tmp/${UID}-runtime-dir
+    if ! test -d "${XDG_RUNTIME_DIR}"; then
+        mkdir "${XDG_RUNTIME_DIR}"
+        chmod 0700 "${XDG_RUNTIME_DIR}"
+    fi
+fi
+
+# Make TMPDIR
+mkdir -p "/tmp/${USER}"
+chmod 770 "/tmp/${USER}"
+
+# make less more friendly for non-text input files, see lesspipe(1)
+if [ -x /usr/bin/lesspipe ]; then
+    export LESSOPEN="|lesspipe %s"
+elif [ -x /usr/bin/lesspipe.sh ]; then
+    export LESSOPEN="|lesspipe %s"
+fi
+
+# colored GCC warnings and errors
+export GCC_COLORS='error=01;31:warning=01;35:note=01;36:caret=01;32:locus=01:quote=01'
+
+export QT_QPA_PLATFORM=wayland-egl
+
+export GTK_THEME="Adwaita:dark"