Here is the code to update in your palettes for the new Button.

To user this, go to Stable Activities > Manage Palettes and add this code to your palette. You can change the colors in this code to whatever you like. The color wheel on the page can help you choose. If you need help understanding what the code does, please read This

You can change the color of the text and the background color of the button. As well as the font.

/*--------------------------------------------------
Set the color and font of the button text
--------------------------------------------------*/

.heebutton { font-family:arial,sans-serif; font-size:15px; color:#dfd48a; background-color: #b67942; padding:3px; border:0px; border-radius:5px; border: 2px solid #000000; }

.heebutton a:visited { font-family:arial,sans-serif; font-size:15px; color:#dfd48a; background-color: #b67942; padding:3px; }

.heebutton a:link { font-family:arial,sans-serif; font-size:15px; color:#dfd48a; background-color: #b67942; padding:3px; }

.heebutton a:hover { font-family:arial,sans-serif; font-size:15px; color:#704219; background-color: #b67942; padding:3px; }