There are benefits to wearing a uniform: you look good, people can read you, and you simplify your life. I think that is what this article is getting at too, but to me, it oversells it: The Genius of Wearing the Same Outfit Every Day. Still worth a quick read, though.
I add that there are drawbacks to wearing a uniform: you can get stereotyped and you can get sick of it. I have tried it, and I think the trick for me was to have more of a template of clothing to wear and stick to that. By that I mean you have a number of different things to wear, but all the clothing fits a certain pattern or template. That approach allows for some variation, but you gain all the benefits of a uniform.
Having read this, do you think the uniform idea is good or bad?