add tip regarding colorspace

README.md

@@ -117,6 +117,9 @@ Will run the video at 48 FPS. The default FPS is 60.
 1. It's been noted the simulator might perform differently based on the hardware. So if your model drives succesfully on your machine it might not on another machine (your reviewer). Saving a video is a solid backup in case this happens.
 2. You could slightly alter the code in `drive.py` and/or `video.py` to create a video of what your model sees after the image is processed (may be helpful for debugging).
 
+### Tips
+- Please keep in mind that training images are loaded in BGR colorspace using cv2 while drive.py load images in RGB to predict the steering angles.
+
 ## How to write a README
 A well written README file can enhance your project and portfolio.  Develop your abilities to create professional README files by completing [this free course](https://www.udacity.com/course/writing-readmes--ud777).