Allow 0 as container accent colour

discord/components.py

@@ -1379,7 +1379,7 @@ class Container(Component):
         }
         if self.id is not None:
             payload['id'] = self.id
-        if self._colour:
+        if self._colour is not None:
             payload['accent_color'] = self._colour.value
         return payload
 

discord/ui/container.py

@@ -243,7 +243,7 @@ class Container(Item[V]):
         components = self.to_components()
 
         colour = None
-        if self._colour:
+        if self._colour is not None:
             colour = self._colour if isinstance(self._colour, int) else self._colour.value
 
         base = {