preferences json save

Assets/ThemeSelector.cs

@@ -3,17 +3,20 @@ using System.Collections.Generic;
 using UnityEngine.UI;
 using UnityEngine;
 
+[RequireComponent(typeof(Dropdown))]
 public class ThemeSelector : MonoBehaviour {
     public Gradient[] themeList;
     public static Gradient theme;
+    public Preferences preferences;
 
     void Awake() {
-        if (theme == null) theme = themeList[0];
+        theme = themeList[preferences.data.themeIndex];
+        gameObject.GetComponent<Dropdown>().value = preferences.data.themeIndex;
     }
 
     public void SelectTheme(Dropdown d) {
-        Debug.Log($"{d.value}");
         theme = themeList[d.value];
+        preferences.data.SetThemeIndex(d.value);
     }
 
     public Gradient CurrentTheme() {