[refactor] improve initial page colour when switching to automatic theme style

Author: zombieFox

src/js/theme.js

@@ -78,6 +78,14 @@ var theme = (function(){
 }
 };
 
+bind.style={
+initial: function(){
+window.matchMedia("(prefers-color-scheme: dark)").addEventListener("change",function(event){
+mod.style.initial();
+});
+}
+};
+
 varmod={};
 
 mod.apply=function(data){
@@ -3088,6 +3096,7 @@ var theme = (function(){
 mod.accent.random();
 mod.custom.close();
 bind.accent.cycle.toggle();
+bind.style.initial();
 render.font.load.display();
 render.font.load.ui();
 render.font.display.name();