Update the theme settings in the fallback config

config/config.exs

@@ -288,7 +288,7 @@
 config :pleroma, :frontend_configurations,
   pleroma_fe: %{
     alwaysShowSubjectInput: true,
-    background: "/images/city.jpg",
+    background: "",
     collapseMessageWithSubject: false,
     disableChat: false,
     greentext: false,
@@ -311,7 +311,7 @@
     showFeaturesPanel: true,
     showInstanceSpecificPanel: false,
     subjectLineBehavior: "email",
-    theme: "pleroma-dark",
+    theme: "itepechi",
     webPushNotifications: false,
     conversationDisplay: "linear"
   },
@@ -341,8 +341,8 @@
       purpose: "any"
     }
   ],
-  theme_color: "#282c37",
-  background_color: "#191b22"
+  theme_color: "#d6cec7",
+  background_color: "#2f2f2f"
 
 config :pleroma, :activitypub,
   unfollow_blocked: true,