High Contrast

Hold the left-ctrl and left-shift and hit the print screen prtscr button in windows. You will be promoted to set high contrast video. Try it for a couple minutes. Hit the same combination to switch back. There are times I use this to set other people's machines because I cannot read their screens with some settings. It trips people out. As long as you don't switch back and forth too quickly, all the settings come back.

Mac must have something similar. I haven't looked. Linux, that is Gnome, requires you to set a keystroke combination to accomplish this. I don't think there is one by default. I've looked.

When I use Linux though, I don't really need to use high contrast video modes. Most of the color schemes seem to be readable for the most part. Sometimes I change the background and mouse if I can (Ubuntu!). I usually set the zoom buttons to 'win-i' and 'win-o' for in and out.

All the high contrast settings, regardless of OS break things. Some programs just don't test their software in high contrast mode. The text disappears from some buttons. This is because they hard code the text color or they base it on the line color of the current scheme. This causes the text to appear the same color as the background in some cases. Simple lack of testing. How many times have I said that about problems I've had with software?