diff --git a/scripts/themes/default.mjs b/scripts/themes/default.mjs
index fa8e456..7114b9a 100644
--- a/scripts/themes/default.mjs
+++ b/scripts/themes/default.mjs
@@ -11,6 +11,18 @@ export default [
     color: color(palette.cyan),
     fileExtensions: ["ts", "cts", "mts", "tsx"],
   },
+  {
+    name: "lang-javascript-test-duo",
+    svgName: "lang-javascript-duo",
+    color: color(palette.red),
+    fileExtensions: ["spec.js", "test.js"],
+  },
+  {
+    name: "lang-typescript-test-duo",
+    svgName: "lang-typescript-duo",
+    color: color(palette.red),
+    fileExtensions: ["spec.ts", "test.ts"],
+  },
   {
     name: "lang-css-duo",
     color: color(palette.indigo),