diff --git a/kasa/smartbulb.py b/kasa/smartbulb.py
index 97aac8a9..4b41f3b6 100644
--- a/kasa/smartbulb.py
+++ b/kasa/smartbulb.py
@@ -153,6 +153,25 @@ class SmartBulb(SmartDevice):
 
         return light_state
 
+    async def get_light_details(self) -> Dict[str, int]:
+        """Return light details.
+
+        Example:
+            {'lamp_beam_angle': 290, 'min_voltage': 220, 'max_voltage': 240,
+             'wattage': 5, 'incandescent_equivalent': 40, 'max_lumens': 450,
+              'color_rendering_index': 80}
+        """
+        return await self._query_helper(self.LIGHT_SERVICE, "get_light_details")
+
+    async def get_turn_on_behavior(self) -> Dict:
+        """Return the behavior for turning the bulb on.
+
+        Example:
+            {'soft_on': {'mode': 'last_status'},
+            'hard_on': {'mode': 'last_status'}}
+        """
+        return await self._query_helper(self.LIGHT_SERVICE, "get_default_behavior")
+
     async def get_light_state(self) -> Dict[str, Dict]:
         """Query the light state."""
         # TODO: add warning and refer to use light.state?
@@ -163,6 +182,13 @@ class SmartBulb(SmartDevice):
         if transition is not None:
             state["transition_period"] = transition
 
+        # if no on/off is defined, turn on the light
+        if "on_off" not in state:
+            state["on_off"] = 1
+
+        # This is necessary to allow turning on into a specific state
+        state["ignore_default"] = 1
+
         light_state = await self._query_helper(
             self.LIGHT_SERVICE, "transition_light_state", state
         )
@@ -239,7 +265,9 @@ class SmartBulb(SmartDevice):
         return int(light_state["color_temp"])
 
     @requires_update
-    async def set_color_temp(self, temp: int, *, transition: int = None) -> Dict:
+    async def set_color_temp(
+        self, temp: int, *, brightness=None, transition: int = None
+    ) -> Dict:
         """Set the color temperature of the device in kelvin.
 
         :param int temp: The new color temperature, in Kelvin
@@ -256,6 +284,9 @@ class SmartBulb(SmartDevice):
             )
 
         light_state = {"color_temp": temp}
+        if brightness is not None:
+            light_state["brightness"] = brightness
+
         return await self.set_light_state(light_state, transition=transition)
 
     @property  # type: ignore
diff --git a/kasa/tests/newfakes.py b/kasa/tests/newfakes.py
index 16ea1d4c..b0d2f29f 100644
--- a/kasa/tests/newfakes.py
+++ b/kasa/tests/newfakes.py
@@ -323,31 +323,33 @@ class FakeTransportProtocol(TPLinkSmartHomeProtocol):
             self.proto["system"]["get_sysinfo"]["relay_state"] = 1
             self.proto["system"]["get_sysinfo"]["brightness"] = x["brightness"]
 
-    def transition_light_state(self, x, *args):
-        _LOGGER.debug("Setting light state to %s", x)
+    def transition_light_state(self, state_changes, *args):
+        _LOGGER.debug("Setting light state to %s", state_changes)
         light_state = self.proto["system"]["get_sysinfo"]["light_state"]
-        # The required change depends on the light state,
-        # exception being turning the bulb on and off
 
-        if "on_off" in x:
-            if x["on_off"] and not light_state["on_off"]:  # turning on
+        _LOGGER.debug("Current light state: %s", light_state)
+        new_state = light_state
+
+        if state_changes["on_off"] == 1:  # turn on requested
+            if not light_state[
+                "on_off"
+            ]:  # if we were off, use the dft_on_state as a base
+                _LOGGER.debug("Bulb was off, using dft_on_state")
                 new_state = light_state["dft_on_state"]
-                new_state["on_off"] = 1
-                self.proto["system"]["get_sysinfo"]["light_state"] = new_state
-            elif not x["on_off"] and light_state["on_off"]:
-                new_state = {"dft_on_state": light_state, "on_off": 0}
 
-                self.proto["system"]["get_sysinfo"]["light_state"] = new_state
+        # override the existing settings
+        new_state.update(state_changes)
 
-            return
+        if (
+            not state_changes["on_off"] and "dft_on_state" not in light_state
+        ):  # if not already off, pack the data inside dft_on_state
+            _LOGGER.debug(
+                "Bulb was on and turn_off was requested, saving to dft_on_state"
+            )
+            new_state = {"dft_on_state": light_state, "on_off": 0}
 
-        if not light_state["on_off"] and "on_off" not in x:
-            light_state = light_state["dft_on_state"]
-
-        _LOGGER.debug("Old state: %s", light_state)
-        for key in x:
-            light_state[key] = x[key]
-        _LOGGER.debug("New state: %s", light_state)
+        _LOGGER.debug("New light state: %s", new_state)
+        self.proto["system"]["get_sysinfo"]["light_state"] = new_state
 
     def light_state(self, x, *args):
         light_state = self.proto["system"]["get_sysinfo"]["light_state"]