I wouldn't suggest going straight behind your team's back to your boss to "Tell". That seems like a quick way to get them all to resent you. I'd try a candid discussion first before this.
I suppose every team is different though.
Something like a style guide might help clarify points. There's also no guarantee that what OP feels about the code is correct. They might like one way but wasn't present for discussions or doesn't understand the work completely. If they're running straight to a manager every time it's only going to end poorly.