Relocate CSS classes for ChoiceFields from model to ChoiceSet

netbox/circuits/choices.py

@@ -23,6 +23,15 @@ class CircuitStatusChoices(ChoiceSet):
         (STATUS_DECOMMISSIONED, 'Decommissioned'),
     )
 
+    CSS_CLASSES = {
+        STATUS_DEPROVISIONING: 'warning',
+        STATUS_ACTIVE: 'success',
+        STATUS_PLANNED: 'info',
+        STATUS_PROVISIONING: 'primary',
+        STATUS_OFFLINE: 'danger',
+        STATUS_DECOMMISSIONED: 'default',
+    }
+
 
 #
 # CircuitTerminations