add mako wal styling

config/mako/update_theme.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+. "${HOME}/.cache/wal/colors.sh"
+
+conffile="${HOME}/.config/mako/config"
+
+# Associative array, color name -> color code.
+declare -A colors
+colors=(
+    ["background-color"]="${background}89"
+    ["text-color"]="$foreground"
+    ["border-color"]="$color13"
+)
+
+for color_name in "${!colors[@]}"; do
+  # replace first occurance of each color in config file
+  sed -i "0,/^$color_name.*/{s//$color_name=${colors[$color_name]}/}" $conffile
+done
+
+makoctl reload