I thought it was blue coveralls, and one guy left a blue wrench that was used to reassemble the backgound. The husband found it and hid it so nobody else would see it. But then the TZ was in Black and White so we can only imagine the colors of the guys building the "sets".
Call them Angels or just the guys in the coveralls, nobody is really supposed to see them. Sometimes we get out of synch of time and notice these things, being in-synch (not the boy band of the same name, you know what I mean) with time blinds us to the goings on around us.
It is not a matter of having rose-colored glasses, it is a matter of seeing things the way we are supposed to see them. If we saw the truth, it would be shocking, I am sure. So instead we see our version of the truth and the way things look like to us. If we saw them from different perspectives it might make a whole different truth.