I also read that cars turned less colorful since 1970s.

And a colleague told me that he read that skirts got longer on average since 1970, but idk about that one.

Also i noticed that most pop music these days are break-up songs.

Really shows you the mood of society.

Fair point! I entirely agree with that perspective in other areas. If we're using this as an example, then I understand why, but I actually think this is one example where the change is a tangibly good thing.