We are having quite the discussion with regard to tagging pipes in Revit. Our new company "standard" shall be to have our existing pipe tags plot light, and our new work to have pipe tags plot dark. We would like to control this by the phase that the pipe is created. Is there one tag to rule them all, or would I need to create a Pipe tag_existing, and a Pipe tag_new. Our preferred method is to have one tag that can differentiate what it should do based on the phase that the pipe was created. Has anyone made one of these or can anyone point me in the right direction.

Thanks for any help in advance.