feat: improve theme color consistency

app/src/lib/result-viewer/Viewer.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
   import { Canvas } from "@threlte/core";
   import Scene from "./Scene.svelte";
+  import { Inspector } from "three-inspect";
   import {
     BufferGeometry,
     Float32BufferAttribute,