styling

hello I just brought your mega display plugin my question i get how to get it two working i have two quesitons

website http://www.kingdomgrindradio.com

you will see where the scrolling thing is and i like it like that however i want to be able to change the back ground i was looking on yoru website maybe for people newb like me some type of code that we can copy and paste into the CSS i would like to have a custom hex color for the background however i was not for sure how to do that your help will be greatly appriacted.

Thank you
Crystal Hale
Techgirl