I support this! ^Derekku wrote:
It actually is pretty annoying to try and keep playing when all of your notes turn gray and become hard-to-read. I agree that the failing notice is enough, but I suggest that the colors fade a little bit (towards gray) rather than flat out being the same exact color. Staying the same color (as before failing) doesn't make much sense, but a subtle effect like I suggested would look very nice.
However, I wouldn't mind if you had at least two gray combo colors that were different instead of having all of the notes the same color...