I knew that seam on the Red Hood outfit was always meant to be a zipper
Also, Hmm, maybe, but, Disco was technically a 70s trend wasn't it, way before Jason ever even existed.
HOWEVER, funny enough, whilst the popped collar has existed for a while, it became a major and more widely known fashion statement by the 80s, (Jason's Robin era) and had a major resurgence in the early 2000s, (Jason's early Red Hood era).
So I guess it's still kinda perfect. No clue what to name it though sorry. I trust the collective fandom will come up with something though. XD