Redmine

hi everyone!

Where i work, we have installed Redmine in production and in test environment. The test environment are of course to make some test and to make a practice when we want to install updates.

Is there a way to put Redmine in "test" mode so the interface would show something to indicate that this is not the production environment? A red message on the top of the page, background with a watermark, etc.. ?

thank you for the help!

alex