Header Background

I have the Invision version. Is there a way to put a picture as the header background rather than a colour? I can obviously find it in Colours but not in Pic Management. I think I have been able to do this before but maybe was using a different skin. I don't want to change skins as I only want to put the picture behind the banner over Xmas.. so is there a way to add it to the CSS or another option?

Thanks

Hi!

You can put it via CSS. Admin CP > Display > Colors > CSS.
Add this code there and submit.

Code:

div#logostrip {
background : url(BACKGROUND URL HERE) no-repeat top left;
}

Hey, thanks for that!
I didn´t ask for that, but it helped me.