[feat] add color scheme

src/App.svelte

@@ -23,9 +23,9 @@
 
 </script>
 
-<main class="flex bg-bg w-full h-full max-w-100vw">
+<main class="flex bg-bg w-full h-full max-w-100vw text-textcolor">
     {#if !$loadedStore}
-        <div class="w-full h-full flex justify-center items-center text-gray-200 text-xl">
+        <div class="w-full h-full flex justify-center items-center text-textcolor text-xl">
             <span>Loading...</span>
         </div>
     {:else if !didFirstSetup}