Yes it was a serious question. Are you actually being serious? You're approach and actions are willfully unsafe and in total disregard for safety of human and property wellbeing. Furthermore, drones can be heard even if they can't be seen. Do you think making your drone stealth will foster a positive attitude from the paranoid public when they hear 'something' overhead but they can't see it? Do you think local LE will be happy with you and give you much positive consideration when you are eventually called into question by such stealth actions, especially if it's in conjunction with an accident? Actually any mishap at that point is not an accident. You'll be deemed wilfully breaching safe practice in flight and be hung out to dry. It's laughable that you consider fpv and a map in an app the basis for your stealth flight being safe. I would request for the hobby sake and the rest of us trying to at least be as safe as possible during night flying that you do not black out your orientation lights completely. No matter what you feel or how many times you do it successfully, ask yourself if you had a safe flight or a lucky one, and be honest. Operating in that unsafe way will hurt us all in the end. Please err on the side of caution, not just because you can't be bothered with nuisance public. That's not for anyone's own good.