I think someone in the SM staff/styling must hate Taeil. I've noticed often his styling is just horrible. From non flattering hair styles and colors, but really ugly and baggy clothes. And look, almost every kpop artist has at least one comeback where they don't look so good with the choices made by the production, but with Taeil it seems too recurrent to be a coincidence. Any casual observer can tell that he doesn't look good with colored hair, nor with that bob fringe hairstyle and definitely not the mullet, that for some reason kpop still tries to make it work.
The best I've seen him is in the Superhuman and Simon Says MVs, not only the buzz cut sides and black hair looks great on him, but the clothes had a good fit. Am I crazy? I mean, he still handsome, don't get me wrong, but clearly SM doesn't put the same effort into figuring what could fit him best.