-content custombutton chrome/
-style chrome://global/content/customizeToolbar.xul chrome://custombutton/content/button.css
+content debian-bts chrome/
+style chrome://global/content/customizeToolbar.xul chrome://debian-bts/content/button.css
# Firefox
-overlay chrome://browser/content/browser.xul chrome://custombutton/content/button.xul
+overlay chrome://browser/content/browser.xul chrome://debian-bts/content/button.xul