diff --git a/options.xhtml b/options.xhtml
index 157540645..b31afb859 100644
--- a/options.xhtml
+++ b/options.xhtml
@@ -80221,10 +80221,12 @@ YAML 1.1 value</p>
  </span>
 </dt>
 <dd>
-<p>Theme for vivid</p>
+<p>An attribute set of vivid themes.
+Each value can either be a path to a theme file or an attribute set
+defining the theme directly (which will be converted from Nix to YAML).</p>
 
 <p><span class="emphasis"><em>Type:</em></span>
-attribute set of absolute path</p>
+attribute set of (absolute path or YAML 1.1 value)</p>
 
 <p><span class="emphasis"><em>Default:</em></span>
 <code class="literal">{ }</code></p>
@@ -80239,6 +80241,18 @@ attribute set of absolute path</p>
     url = &quot;https://raw.githubusercontent.com/NearlyTRex/Vivid/refs/heads/master/themes/catppuccin-mocha.yml&quot;;
     hash = &quot;sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=&quot;;
   };
+
+  my-custom-theme = {
+    colors = {
+      blue = &quot;0000ff&quot;;
+    };
+    core = {
+      directory = {
+        foreground = &quot;blue&quot;;
+        font-style = &quot;bold&quot;;
+      };
+    };
+  };
 }
 
 </code></pre>