Our pages fail wcag 2.0 AA validation when background images are disabled. (Due to background colour)We want to keep the dark background we have at the moment, but make the background white if images aredisabled. Is the below a smart solution to the problem?bg_top is the main background image. bg_secNavigation is the dark background as a gradient.\[code\]background-image: url(../images/bg_top.jpg), url(../images/bg_secNavigation.jpg);background-repeat: no-repeat, repeat-x;background-color: #fff;background-position: center top, left top;\[/code\]