Fix jqueryui plugin's minicolors.css issue with custom skins (#9967)

Author: alecpl

CHANGELOG.md

@@ -10,6 +10,7 @@ This file includes only changes we consider noteworthy for users, admins and plu
 - Add tooltip with folder name to widescreen list of multi-folder listing (#9989, #7950)
 - Add ability to chose from all available contact fields on CSV import (#9419)
 - Password: Removed the (insecure) virtualmin driver (#8007)
+- Fix jqueryui plugin's minicolors.css issue with custom skins (#9967)
 
 ## Release 1.7-beta2
 

plugins/jqueryui/jqueryui.php

@@ -118,7 +118,12 @@ public static function miniColors()
         $config = ['theme' => $colors_theme];
         $config_str = rcube_output::json_serialize($config);
 
-        $rcube->output->include_css('plugins/jqueryui/' . $css);
+        if (!array_key_exists('elastic', (array) $rcube->output->skins)) {
+            $rcube->output->include_css($css);
+        } else {
+            $rcube->output->include_css('plugins/jqueryui/' . $css);
+        }
+
         $rcube->output->include_script($script, 'head', false);
         $rcube->output->add_script('$.fn.miniColors = $.fn.minicolors; $("input.colors").minicolors(' . $config_str . ')', 'docready');
         $rcube->output->set_env('minicolors_config', $config);