Added loader for GTK3 theming.

I'm hoping this will resolve some of the weirdness with some applications.

sway/config

@@ -250,6 +250,13 @@ bindsym $mod+r mode "resize"
  bindsym XF86MonBrightnessUp exec brightnessctl set +5%
 
 
+# GTK 3 settings
+# See https://github.com/swaywm/sway/wiki/GTK-3-settings-on-Wayland for more info.
+
+exec_always ~/.config/sway/import-gsettings \
+    gtk-theme:gtk-theme-name \
+    icon-theme:gtk-icon-theme-name \
+    cursor-theme:gtk-cursor-theme-name
 
 #
 # Status Bar:

sway/import_gsetting

@@ -0,0 +1,11 @@
+#! /bin/sh
+# Lifted from https://github.com/swaywm/sway/wiki/GTK-3-settings-on-Wayland
+# usage: import-gsettings <gsettings key>:<settings.ini key> <gsettings key>:<settings.ini key> ...
+
+expression=""
+for pair in "$@"; do
+    IFS=:; set -- $pair
+    expressions="$expressions -e 's:^$2=(.*)$:gsettings set org.gnome.desktop.interface $1 \1:e'"
+done
+IFS=
+eval exec sed -E $expressions "${XDG_CONFIG_HOME:-$HOME/.config}"/gtk-3.0/settings.ini >/dev/null