Background Problem

I am using godmakers theme & I would like the whole site background to be simply "jet black". I have uploaded A black image to Display > Pictures and Colors > Pics management > Advanced Mode > Background picture (page) & nothing changes (It worked once when I refreshed & it seemed the site timed out & glitched but upon refresh the black backgroung was gona again)

Just cant seem to get it to work, If you could help me out I would be eternally great full.

Thanx in advance & HAPPY NEW YEAR

Proof Image:

SORTED:

This was already in CSS & was blocking my new black theme "doh"

html {
background: #000 url("http://www.dodaj.rs/f/2l/j6/3RcPRexE/bg2.png");
/* Height is 100%, so the body can be 100% */
height: 100%;
}

body {
background: url("http://www.dodaj.rs/f/2h/lT/3y4CHLCn/gt2.png") no-repeat;
background-position: bottom center;
/* Height is 100%, so the tiled BG will tile all the way down
the page, not just as far down as the page’s content
(when the content’s height is less than the window’s height) */
}
/*
Hackety-hack-hack…
FF2, with the above code, will only display the repeat-y image for as
high as the window’s viewport is; higher content (upon
scrolling) will not have the bg.
This "hack" makes the tiled background work properly in FF2.
This type of "advanced selector" is not understood by IE6…dunno
’bout IE7.
*/
html>body {
min-height: 100%;
width: auto;
}



div.t16 {font-size: 16pt}
div.t9 {font-size: 9pt}
div.t12 {font-size: 11pt}

All I did was remove it all & viola JOB DONE