When color rating images in the library module, a message bar pops up on the lower part of the image telling you what you just rated the image. For example, you use the shortcut 6 to rate red. The message would then say, Set Label to "Red". It's rather large and gets in the way when rating thousands of images. It disappears after half a second, but in either case it is distracting. Is there a way to hide it or change the way it appears?
I don't think so.
Remember that it's an important safeguard - it's very easy to hit a shortcut by mistake.