A bad pawn doing good things

Normally in Bishop endings, you try and put your pawns on the opposite colour squares to your bishop. Of course, with every rule, you should look at the reasons why the rule is followed, and reasons for breaking it.
In the game below, I was already better, in the ending, as I won a pawn by threatening to trap a bishop. But the move I really liked was 34. ... f4. Even though it put my f pawn on the same colour square as my (and my opponents bishop), it completely crippled his 3v2 kingside pawn majority, allowing me to quickly win on the queenside.


Michelino47 (1614) - shaunpress (2392) [C63]
PNG Tournament March 2020 Chess.com, 07.04.2020