Or you get a chance for everyone in your office... even those who barely interrupted you before... stop by and ask you "hey, your wi-fi isn't working, because i

Or you get a chance for everyone in your office... even those who barely interrupted you before... stop by and ask you "hey, your wi-fi isn't working, because it's red now", or something like that. Then, after sometime, everybody stops worrying if you ask to be interrupted or not, simple because they interrupt you because they need/want to, and for every person, the selfish needs are much more important then the signals you (or your led) emits.