I am wondering if there is any way to change the default style for sections. I would like to create a banner (across the page) with a dark-gray background and the section title in white. It would be great if I can also put two black bold lines on the top and bottom edge of the banner. I saw someone use TikZ to style the section but I am not familiar with that; is there any other package that can do that for me?
Of course this could be done using