Logic 10.0
"If you're used to previous versions of Logic, I think it's fair to say that you might be in for a bit of a shock the first time you see Logic Pro X's new user interface. It's certainly not 'GarageBand Pro', as many users feared, but Apple have clearly taken ideas from Logic Pro, GarageBand and Final Cut Pro X and fused them together to create a modern look. The result is incredibly dark, even compared with other music software, and a part of me misses the appearance of Logic 9, where function areas were light and contrasted well with the darker editing areas."
https://www.soundonsound.com/reviews/apple-logic-pro-x
Sounds like you missed the early days of Logic 10 then... 😉
The interface changes I'm talking about happened quite a bit before Logic 10.4.x, and it's been more or less stable since then.