There are three button colors that can be used in the CMS. They can easily be created when you set up your link or you can use the List Spread Buttons snippet to created multiple buttons in a row.
This snippet creates a row of buttons that link to other pages or websites. The default button style is the “blank” style. When hovering over the button it gets a gold fill. The button width changes to fit all buttons evenly in the available area and the height changes to fit all link text.