Fix: Convert BGR to RGB color space for correct video colors (#338)

- Added cv2.cvtColor conversion before PIL processing
- Fixes blue tint issue in video feed
- Ensures correct color representation in Gemini 2.0 Live API video feed
- Added explanatory comments for future maintainers

Issue: Video feed shows blue tint due to BGR/RGB colorspace mismatch
Solution: Convert OpenCV BGR output to RGB before PIL processing

gemini-2/websockets/live_api_starter.py

@@ -83,7 +83,11 @@ def _get_frame(self, cap):
         if not ret:
             return None
 
-        img = PIL.Image.fromarray(frame)
+        # Fix: Convert BGR to RGB color space
+        # OpenCV captures in BGR but PIL expects RGB format
+        # This prevents the blue tint in the video feed
+        frame_rgb = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
+        img = PIL.Image.fromarray(frame_rgb)  # Now using RGB frame
         img.thumbnail([1024, 1024])
 
         image_io = io.BytesIO()