One thing I want to attempt, in my multiple POV characters, is to try and make the textual voices even more distinctive than the dialogue (on the grounds that there are things going through your head you'd never say out loud) and I'm wondering how far I can go before the audience just thinks 'this style is awful'.
So, for Michael, when he's in a normal mood his voice is OTT and purple, but when he gets depressed it swings into a more physically subdued but emotionally hyper style; the other characters are to a greater or lesser extent plainer in their narrative.
So my questions are
1) how many swings in narrative style will a reader put up with and
2) what degree of hammy and purple prose is still acceptable before crossing the line into bad?