Adopt theme color in skipass-badge for site ser

public/typo3conf/ext/ep_theme/Resources/Private/Assets/scss/components/_herounit.scss

@@ -11,7 +11,7 @@
     @apply text-white;
 
     &--skipass {
-        @apply bg-badge-gradient ser:bg-ser-secondary py-8 px-2;
+        @apply bg-badge-gradient ser:bg-none ser:bg-ser-secondary py-8 px-2;
     }
 
     &--custom {

tailwind.config.js

@@ -150,6 +150,7 @@ module.exports = {
     variants: {
         extend: {
             backgroundColor: [ 'sbw', 'sbw-hover', 'sbw-group-hover', 'snz', 'snz-hover', 'snz-group-hover', 'uch', 'uch-hover', 'uch-group-hover', 'ser', 'ser-hover', 'ser-group-hover', 'even', 'odd' ],
+            backgroundImage: [ 'ser' ],
             borderWidth: [ 'even', 'odd', 'first', 'last' ],
             textColor: [ 'sbw', 'sbw-hover', 'snz', 'snz-hover', 'uch', 'uch-hover', 'ser', 'ser-hover' ],
             borderColor: [ 'sbw','snz', 'uch', 'ser' ],