Colours not working on website
 

My mothers boyfriend has changed some sort of setting on his account on the PC, but I can't figure out what it is. Basically all colours on websites are blank, images still load but no colours except for the fonts (which are oddly big).

What web browser is being used on that account? (IE, Mozilla, Netscape, Opera, etc.)

Well it's the same issue on both Firefox and IE... although the fonts are a little better on Firefox... none of the colours are working on either.

But on the same PC just on my account, everything is fine.