diff --git a/wwwroot/css/v2/calendar-v2-events.css b/wwwroot/css/v2/calendar-v2-events.css
index 0897562..5aad3b4 100644
--- a/wwwroot/css/v2/calendar-v2-events.css
+++ b/wwwroot/css/v2/calendar-v2-events.css
@@ -366,13 +366,12 @@ swp-header-item {
   user-select: none;
   transition: background-color 200ms ease;
 
-  /* Color system fra swp-event */
-  background-color: color-mix(in srgb, var(--b-primary) 10%, var(--b-mix));
+  /* Color system - inverted from swp-event */
+  background-color: color-mix(in srgb, var(--b-primary) 15%, var(--b-mix));
   color: var(--b-text);
-  border-left: 4px solid var(--b-primary);
 
   &:hover {
-    background-color: color-mix(in srgb, var(--b-primary) 15%, var(--b-mix));
+    background-color: color-mix(in srgb, var(--b-primary) 10%, var(--b-mix));
   }
 
   /* Dragging state */