Comment 2 for bug 28798

One more minor issue I forgot to mention: the sleep and hibernate icons are the exact same thing with different colors. There are many types of color blindness, and I'm not sure if any of them would come into effect with this dialog, but I suspect it's likely. Furthermore, the human mind is more efficient at recognizing shapes than colors, so it would be more useful to have two icons with different shapes but the same colors rather than same colors and different shapes. (Being both different shapes and color is best, of course.)

The power off icon is also a little too similar, in my opinion. The icons also rather don't make sense. Power off isn't using the international sign for power, but sleep is? The reboot icon also looks like the refresh icon in a browser. I don't know if that's intentional or not (I can see the analogy), but it may not be the best icon to use given the differences between refreshing a single web page and rebooting the entire machine.