There are several available shortcode buttons. You can modify site wide buttons in theme options.
The options selected in this section will override the button styling defaults throughout the site. Override default, primary, danger, warning, success, info, inverse. You’ll control the color of: background, bottom border, text, hover background, hover bottom border, hover text. Create and modify square or rounded corners, border radius, font face, font weight and bottom border option.
How to access: Appearance > Theme Options > Button Styling
Button Color Options
There are 7 buttons that can have different color layouts. Here’s an example of one.