Thread:Superluigi6/@comment-171752-20150209184939

Hi Superluigi6. I wanted to reply here on your message wall, rather than the request page, just to be sure that you see it.

The gap on the background happens for any background image that is less than 2,000 pixels wide. You can define what color is used there by going to Special:ThemeDesigner. Under "Background" click the colored box under "middle" and either choose one of the swatches or enter the name or hex value for the color you want to use. 