Use the Button Theme Editor (Layout >> Button Theme Editor) to set which button theme you wish to use throughout your site. Simply select your button theme from the drop down menu provided. To view all of your button theme options, click “View All Button Themes”.
If you already have a custom button theme, and you want to overwrite the new button images first create images for each of the new buttons on Page 1 of this guide. As you save each one, be sure you give it the same filename as the default buttons. Once complete upload the new button images with your File Manager to your current button theme folder within the button_themes directory to overwrite the existing images.
When the button images have been uploaded they will appear within the Layout >> Button Theme Editor.