Change Button Color without using pricetable.css

Hi,

I’m just wondering if it is possible to change the button color without having to edit the code from pricetable.css

If not, could somebody guide me what line I need to change so that I do not get that gap in my buttons between the border of the button and the fill. You can see the example here http://absolutevision.biz/#price

Appreciate all help offered here.

http://wordpress.org/plugins/pricetable/