ISTWCMS-4579 Adding branding select to fdsu theme settings form.

uw_fdsu_theme_resp.theme

@@ -156,6 +156,24 @@ function uw_fdsu_theme_resp_form_system_theme_settings_alter(&$form, FormStateIn
       'org-school' => t('Red (School)'),
     ],
   ];
+
+  // Fieldset for branding options.
+  $form['branding_options'] = [
+    '#type' => 'details',
+    '#open' => TRUE,
+    '#title' => t('Branding options'),
+  ];
+
+  // Branding select option.
+  $form['branding_options']['wcms_branding_level'] = [
+    '#type' => 'select',
+    '#options' => [
+      'full' => t('Full University branding'),
+      'generic' => t('Generic with University wordmark'),
+      'generic_barebones' => t('Fully generic'),
+    ],
+    '#default_value' => theme_get_setting('wcms_branding_level', 'uw_fdsu_theme_resp') ?: 'full',
+  ];
 }
 
 /**