Change the color of font and background on my computer???

Somehow, my wifes computer got set so the background on all entry spaces and backgrounds are black (both on websites, and the system itself) and all fonts are purple italiacs. How can i put these back to the default of black and white?Change the color of font and background on my computer???
Right click ';Desktop'; 禄 Properties 禄 Appearance 禄

on the Advanced tab

Change it as you wishChange the color of font and background on my computer???
sorry
You might have High Contrast mode on. Make sure your F-Lock key is off, and hold the left alt key, left shift button, and the ';Print Screen'; button down. See if that helps....
go under control pannel then display and see wat u can do if not ask someone