diff --git a/netbox/circuits/forms/bulk_edit.py b/netbox/circuits/forms/bulk_edit.py
index 080c10225..5c416bff9 100644
--- a/netbox/circuits/forms/bulk_edit.py
+++ b/netbox/circuits/forms/bulk_edit.py
@@ -103,9 +103,9 @@ class CircuitTypeBulkEditForm(NetBoxModelBulkEditForm):
 
     model = CircuitType
     fieldsets = (
-        (None, ('color', 'description',)),
+        (None, ('color', 'description')),
     )
-    nullable_fields = ('color', 'description',)
+    nullable_fields = ('color', 'description')
 
 
 class CircuitBulkEditForm(NetBoxModelBulkEditForm):
diff --git a/netbox/dcim/svg/cables.py b/netbox/dcim/svg/cables.py
index 7b376661b..31e090078 100644
--- a/netbox/dcim/svg/cables.py
+++ b/netbox/dcim/svg/cables.py
@@ -182,7 +182,7 @@ class CableTraceSVG:
         if hasattr(instance, 'role'):
             # Device
             return instance.role.color
-        elif instance._meta.model_name == 'circuit':
+        elif instance._meta.model_name == 'circuit' and instance.type.color:
             return instance.type.color
         else:
             # Other parent object
diff --git a/netbox/templates/circuits/circuittype.html b/netbox/templates/circuits/circuittype.html
index 76e4a7884..407ee4042 100644
--- a/netbox/templates/circuits/circuittype.html
+++ b/netbox/templates/circuits/circuittype.html
@@ -32,7 +32,11 @@
           <tr>
             <th scope="row">{% trans "Color" %}</th>
             <td>
-              <span class="badge color-label" style="background-color: #{{ object.color }}">&nbsp;</span>
+              {% if object.color %}
+                <span class="badge color-label" style="background-color: #{{ object.color }}">&nbsp;</span>
+              {% else %}
+                {{ ''|placeholder }}
+              {% endif %}
             </td>
           </tr>
         </table>