I went into the charms menu and change pc setting and then ease of access and there was an on/off switch for high contrast. Well I switched it to on and wow was it ugly. I tried to switch off and it would switch back to on and the screen remained in high contrast. I tried to go back to a restore point and it didn't work. I then googled it and found I could go change it under display settings and it went back to normal and stayed that way.
Light bulbs you shouldn't buy
There are plenty of dimmable LED light bulbs, but make sure you don't buy the ones that flicker when you dial them down.