Dotfiles usage when upgrading

Situation: I usually have to perform some tweaks after an update.

What I need: I change the icons, change the Button.qml, the Page.qml and choose gestures hanlding, ssh developer password.

How I do it: I created some script files to do this. I prefer this instead of using the patches because I have more control on it.

Question: does it exist a .config file that I can change to point at a special Page.qml file created by me?