Button Widget How to set active color and inactive?

could some one show me how to set the color upon click in code for the button widget…


"<div ng-init='model1={"action_type":"toggle","item": "isy_program_cd7bfe14_0029_control","command":"runThen","command_alt":"runElse", "hidelabel": true, "hideonoff": true, "iconset": "smarthome-set","icon": "bulb","icon_size": "62" }'>
<widget-button model="model1" />"

many thanks