Disableing religious improvements and city art.

[Ekolite]

Does anyone know an easy way (for examle, changing a 1 to a 0) to stop city art and improvements changing when you adopt a religion. So, at the beginning, I adopt OO, is there a way to stop the vanilla style changing to the blue skyscrapers? And then if later I adopted AV, they still wouldn't change, and WOULD NOT become red and black skyscrapers with random pools of blood?