Qt for Python (PySide/Shiboken)

Hey everyone, I'm having this very weird issue while trying to use Qt Stylesheets. So basically I have some QPushButtons whose color I want to set. I am using a stylesheet but only one of the buttons is colored. Moreover, I changed the rgb value for the button which gets colored and yet it is still shows up with the same colour it did as first and doesn't update at all. This is what my code and rendered stylesheet look like: https://bpa.st/ERXA And, this is what my window looks: https://imgur.com/a/SQeW7k6