Change footer putter background color

Hello I have a website running with the zerif pro theme and the footer putter plugin but there’s sees to be a little problem with it because i cain’t change the backround coloro so that it matchs the ret of the website could someone code out here please ? thanks ahead.

Here’s the link http://www.cooper-limo.com thanks for taking time to check it out!

https://wordpress.org/plugins/footer-putter/