Does anyone have any tricks on how to use the badged buttons feature of addon-sdk from non-sdk addons? https://developer.mozilla.org/en-US/Add-ons/SDK/Low-Level_APIs/ui_button_action#Badged_buttons
If no tricks my thinking was to use maybe override xbl and/or override display='xul:button'
from techniques listed here: To anonymous element add pseudo element and cursor style and event listeners