Assign color_mode for mqtt light as ColorMode (#100709)

homeassistant/components/mqtt/light/schema_basic.py

@@ -557,7 +557,7 @@ class MqttLight(MqttEntity, LightEntity, RestoreEntity):
                 _LOGGER.debug("Ignoring empty color mode message from '%s'", msg.topic)
                 return
 
-            self._attr_color_mode = str(payload)
+            self._attr_color_mode = ColorMode(str(payload))
             get_mqtt_data(self.hass).state_write_requests.write_state_request(self)
 
         add_topic(CONF_COLOR_MODE_STATE_TOPIC, color_mode_received)

tests/components/mqtt/test_light.py

@@ -3175,9 +3175,9 @@ async def test_reloadable(
         ("state_topic", "ON", None, "on", None),
         (
             "color_mode_state_topic",
-            "200",
+            "rgb",
             "color_mode",
-            "200",
+            "rgb",
             ("state_topic", "ON"),
         ),
         ("color_temp_state_topic", "200", "color_temp", 200, ("state_topic", "ON")),