diff --git a/index.html b/index.html
index 2dd2c0b..a262b64 100644
--- a/index.html
+++ b/index.html
@@ -43,6 +43,15 @@ <h1 class="display-4">Welcome to RepoSF Visualizer</h1>
                         <label for="repository" class="form-label">Repository Name</label>
                         <input type="text" class="form-control" id="repository" required>
                     </div>
+                    <div class="mb-3">
+                        <label for="theme" class="form-label">Select Theme</label>
+                        <select class="form-control" id="theme">
+                            <option value="default">Default</option>
+                            <option value="dark">Dark</option>
+                            <option value="light">Light</option>
+                            <option value="colorful">Colorful</option>
+                        </select>
+                    </div>
                     <button type="submit" class="btn btn-primary">Visualize Forks & Stars</button>
                 </form>
             </div>