[Request] Generic colours for all districts

[Vandlys]

I was just wondering if it was possible for someone to change the specified colours (green for urban, pink for theatre, red for encampment, blue for campus, etc.) to the generic colours used by the buildings in cities.
Why? Well, because I don't need it from a UI perspective, and I think it would look extremely beautiful to see Civ cities in a homogenous state : )