change color/text of the buy button for pay per view plugin

Is there a snippet of code that I could add to the "my custom css" plugin that would change the color of the buy button?

Here is the page, it just seems to faint to really be noticed:
http://iempoweruonlineentrepreneur.com/2015/07/21/review-your-existing-online-presence-at-iempoweru-online-entrepreneur/

Thanks in advance! Linda @iempoweru