diff --git a/arduino/mqttfastledmenu/mqttfastledmenu.cpp b/arduino/mqttfastledmenu/mqttfastledmenu.cpp
index 0f5d381..73dbcd9 100644
--- a/arduino/mqttfastledmenu/mqttfastledmenu.cpp
+++ b/arduino/mqttfastledmenu/mqttfastledmenu.cpp
@@ -312,6 +312,36 @@ void SetupPurpleAndGreenPalette()
 
 //////////////////////////////////////////////////////////////////////////////
 
+
+
+//////////////////////////////////////////////// ColorTemperature
+void colorTemp()
+{
+  // draw a generic, no-name rainbow
+  static uint8_t starthue = 0;
+  fill_rainbow( leds + 5, LED_NUM - 5, --starthue, 20);
+
+  // Choose which 'color temperature' profile to enable.
+  uint8_t secs = (millis() / 1000) % (DISPLAYTIME * 2);
+  if( secs < DISPLAYTIME) {
+    FastLED.setTemperature( TEMPERATURE_1 ); // first temperature
+    leds[0] = TEMPERATURE_1; // show indicator pixel
+  } else {
+    FastLED.setTemperature( TEMPERATURE_2 ); // second temperature
+    leds[0] = TEMPERATURE_2; // show indicator pixel
+  }
+
+  // Black out the LEDs for a few secnds between color changes
+  // to let the eyes and brains adjust
+  if( (secs % DISPLAYTIME) < BLACKTIME) {
+    memset8( leds, 0, LED_NUM * sizeof(CRGB));
+  }
+
+  FastLED.show();
+  FastLED.delay(8);
+}
+
+////////////////////////////////////////////////////////////////////
 void loop() {
   // MQTT
   testConnectMQTT();
@@ -325,8 +355,10 @@ void loop() {
       ledCylon();
     } else if (ledEffect == LED_EFFECT_FULLRED) {
       ledFullColor();
-    } else if (ledEffect == LED_EFFET_COLORPATTERN) {
+    } else if (ledEffect == LED_EFFECT_COLORPATTERN) {
       ledColorPattern();
+    } else if (ledEffect == LED_EFFECT_COLORTEMP) {
+      colorTemp();
     } else {
       ledError();
     }