Full user review
"nice, but i couldnt find a color scheme that worked"
simple, unobtrusive, effective.
It's transparent (a good thing) but at different times it's on top of white, black, or grey or other colors. I couldn't find one color that worked for all. Some black-with-white-outline would have worked for me, but i couldnt find such a thing.
Also you have to actually click on the number itself, not just near it, to get the pop-up menu. That's not too bad -- once you know it (i learned it in help)