use _lm.tempo and set sleep to 0

pyleds/program/promise/ChristmasLights.py

@@ -8,7 +8,7 @@ def name():
 class ChristmasLights(Program):
     def run(self, args: [] = None):
         # Configuration
-        wait_ms = 100  # Speed of the animation
+        wait_ms = 0  # Speed of the animation
 
         # Define classic festive colors
         RED = Color(255, 0, 0)
@@ -34,5 +34,5 @@ class ChristmasLights(Program):
 
             # Increment offset to move the lights
             offset = (offset + 1) % (len(colors) * group_size)
-
+            self._lm.get_tempo().wait()
             time.sleep(wait_ms / 1000.0)