It isn't possible to provide a custom background color for buttons in the action pane.
If you just want the button to look different, you can set the ToogleButton
property to Check
and the ToggleValue
property to On
to give it a difference appearance, you will also need to add code in the clicked method for the button to prevent it toggling to Off
. This will give the button a different background color, but you won't have any control over the color used.