I don't understand how you can change the background on the profile. Any advice?

body { background-color: ; background-image:url('IMAGE URL'); background-repeat: no-repeat; height: ; width: ; } Online colorpicker to get your background color.

Background repeat can be: Repeat-y repeat-x or no-repeat

Height and width are the height and width of your background image.

Just an addition to what Sorcerer said...

If you have a background that you want to repeat on the whole window, you don't want to give your background a width or height.