diff -u b/core/themes/bartik/color/color.inc b/core/themes/bartik/color/color.inc
--- b/core/themes/bartik/color/color.inc
+++ b/core/themes/bartik/color/color.inc
@@ -102,11 +102,6 @@
     'css/colors.css',
   ),
 
-  // Files to copy.
-  'copy' => array(
-    'logo.svg',
-  ),
-
   // Gradient definitions.
   'gradients' => array(
     array(
only in patch2:
unchanged:
--- a/core/modules/color/color.module
+++ b/core/modules/color/color.module
@@ -134,7 +134,7 @@ function color_preprocess_page(&$variables) {
 
   // Override logo.
   $logo = \Drupal::config('color.theme.' . $theme_key)->get('logo');
-  if ($logo && $variables['logo'] && preg_match('!' . $theme_key . '/logo.png$!', $variables['logo'])) {
+  if ($logo && $variables['logo'] && preg_match('!' . $theme_key . '/logo.svg$!', $variables['logo'])) {
     $variables['logo'] = file_create_url($logo);
   }
 }
@@ -451,10 +451,16 @@ function color_scheme_form_submit($form, FormStateInterface $form_state) {
   $paths['source'] = drupal_get_path('theme', $theme) . '/';
   $paths['files'] = $paths['map'] = array();
 
-  // Save palette and logo location.
+  // Save logo location only if logo.png is provided.
+  if (isset($info['copy']) && in_array('logo.png', $info['copy'])) {
+    $config
+      ->set('logo', $paths['target'] . 'logo.png')
+      ->save();
+  }
+
+  // Save palette.
   $config
     ->set('palette', $palette)
-    ->set('logo', $paths['target'] . 'logo.png')
     ->save();
 
   // Copy over neutral images.