Many of us have been in that place. If we observe enough, we shall never fail to be amused and entertained. Oh! I am talking about sitting behind tinted glasses and watching the world pass by. I call this a specialised form of people-watching!
I don't know how many have actually done this. Have you been seated in a room or a vehicle where people outside cannot see you but you can see everything that is going on outside. A hilarious experience, by Jove! Well, there are many sorts of people who pass by, giving you ample laugh bytes. Some narcissists take pleasure is admiring them in the glass (behind which you are sitting and grinning); some check their nostril hairs! Phew! There are some who check whether their make-up is fine while some just wink.
There is voyeuristic pleasure in this act as the person outside the glass (doors/car-windows) is most of the times oblivious that someone is actually inside. Even though common sense knows that since the glass is raised, there ought to be a person inside, is never thought by any individual. Sometimes life is like that!
We are quite oblivious of what is actually happening. Probably the term 'rose-tinted' came from that. But the only difference is that as a pass-time, we are inside and having fun while in the real sense, the individual covers the mind and imagines fun!
And sometimes the reverse can happen. We imagine that since the glasses are tinted, people outside cannot see us and therefore we can have our time. Not always! If the person outside looks carefully, (s)he can look through!
Rose-tinted glasses, anyone?!?!?