I would like to make a simple firefox extension that will let me know if a site is WordPress or not. It will do a simple "find" within the code of the open website for common wordpress elements, like wp-content and/or wp-includes. If the site is wordpress the icon will be red, if not it will have an x through it like the attached image. Also, the "title" text will change depending on the status of the site.
I would require you to develop it under my addon account and details would be provided upon request.