fix(t3-chat): Unthemed search grounding button

Author: arithefirst

styles/t3-chat/catppuccin.user.less

@@ -212,10 +212,17 @@
 
     /* Search grounding button */
     .hover\:bg-pink-500\/10.hover\:text-pink-500\/40:hover {
-      background-color: fade(@accent, 30%);
+      background-color: fade(@accent, 40%);
       color: @accent;
     }
 
+    .bg-pink-500\/20 {
+      background-color: fade(@accent, 20%);
+      & > svg {
+        color: @accent !important;
+      }
+    }
+
     /* Tailwind Prose */
     .prose {
       --tw-prose-body: @text !important;