Add missing concept color

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

@@ -33,6 +33,10 @@
         @apply bg-concept-wkd;
     }
 
+    &--kt {
+        @apply bg-concept-kt;
+    }
+
     &--spz {
         @apply bg-concept-spz;
     }