Background IMG within theme layout?

[floreschris]

Hi,

I was wondering if there was a way to set a custom tiled background IMG to replace the squares (outside the gallery boxes) in the theme "Black Arts" on all levels (main, category, gallery..).

Is there a code for this? Thanks.

My site:
http://chrisfotos.smugmug.com/

[floreschris]

I added the following code which works:

body {
background:url(http://chrisfotos.smugmug.com/photos/268700856_isukX-O.jpg) !important;
}

However, within categories and galleries, it looks a bit funky.

Example: http://chrisfotos.smugmug.com/Events%20&%20Photoshoots

Is there a way to make the background within the category/gallery box all black? What about all transparent?