A warning borders for salesforce non-sanbox org. Borders are also in developer console and in anonymous window.
This app is for distinguishing the production environment and sandboxes, so that the admin/developer will clearly see now it is a production. There are red dotted borders around the main window, developer console and also anonymous window. If there is any page, where is still red dotted border but shouldn't be, please let me know.
Have fun!