Update actors/ghost.py

actors/ghost.py

@@ -37,6 +37,10 @@ class Ghost(pygame.sprite.Sprite):
 
     def set_mode(self, mode: GhostMode):
         self.mode = mode
+        if mode == GhostMode.FRIGHTENED:
+            self.image.fill((33, 33, 255))  # dark blue
+        else:
+            self.image.fill(self.color)
 
 class Blinky(Ghost):
     def __init__(self, position):