Philosopher, Rav Falk’s book contains many, many chumras. Just because people follow his shittah, does NOT change that.
There are rabbonim who assur ALL forms of sheitels (including Rav Elyashiv).
The halacha is that a woman is required a head or hair covering (depending on the shittah). Lenght, style etc has to be taken on a case by case basis. Should curly sheitels be outlawed? After all, they do attract more attention.
If we assured anything that attracted attention, women would have to be locked up. I don’t know the last time you were on the subway and saw a chassidish women (especially in the summer) but I can tell you they attract a lot of stares.
If everyone is wearing metallic shoes, no one will really notice because its not eye catching. Same with bright colors.
Conclusion: Women should dress in brown homespun gowns with turtlenecks, long sleeves, 70 denier minimum stockings and a snood.