Grey Scale Value of colors Dose anyone know if there is some type of tool that will give you a read out of a colors value as if it were in grayscale mode. I want to get a reading on a color image before I convert to grayscale. In other words if there is red in the picture, I want to run the curser over the red and see a read out showing what the percentage of grey the red would be IF it was in grey mode. Any ideas.