Sometimes you cannot tell whether something is an Easter egg or not.
Just some food for thought: it seems that there is a dominating color in MCU Phase Four movies and TV series. And, according to the eagle-eyed fans, this color is purple.
Seriously, have a look.
And you know what? Purple means time for conspiracies (not necessarily, but in this particular case it does).
But imagine being a regular MCU folk trying to live a non-dramatic, non-superheroic life and these mega-powerful guys do something again just for things to become purple.
Now, all we have to do is to determine the dominant color of other MCU phases and what could they mean. Seems like Twitter is open to absolutely any kind of ideas on that.