I want to tweak some apps appearance through their info.plist.
But apps installer via Mac App Store don't open after that, because their signing validations (I'm running Yosemite).
Is there a way I can tweak them?
Well, turns out it's very easy.
I just had to run the code signing tool:
sudo codesign -f -s - /path_to_app.app
But I will have to change the info.plist and run this every time the app is updated.