I kind of miss the times were people had colorful cars, and I don't understand this argument of screaming for attention. Looking at beautiful cars like the Alfa Giulia being black rather than Alfa red [1] or Quadrifoglio green...again?
[1]https://i.pinimg.com/564x/4b/4b/16/4b4b16277ab1652775cd5c7de...
[2]https://cdn-img.automoto.it/images/22002933/1000x/20200507-1...
This has impacts on the industries surrounding as well. If I want a custom siding color, it's going to be more expensive. We're normalizing everything around the most widely palatable, so it's all fairly bland.
My counter argument to this is that then it is the "norm" and society conditioning our taste and dictating what's palatable.
This goes as deep as influencing and forming our sexuality. We get aroused by things that would've not aroused people centuries ago, the canons of beauty themselves changed a lot.