There is an option under Site Options to select a few standard patterns for your background when using the simplicate theme. The option is under Color Control and has about six different patterns to chose from. I have selected one of these options but it is not showing up on my site. I do not have any colors selected under the color control option and have cleared my cache. I actually see the background for a split second before as the site loads. I am wondering if there is a compatibility issue with the crack bar or another plugin on my site.