Hated Twitter’s new white banner so decided to build myself a Safari extension (because I mainly use Safari) that will make it dark which in my opinion would look better. 

So I documented myself on how to build Safari Extensions (turns out it was pretty easy, Apple provides a great tool integrated in Safari to simplify the task) and enrolled for Safari Developer Program (which was free so why not).

So if you hate the new white banner as much as I do, you can download my extension for Safari here: https://extensions.apple.com/details/?id=com.avatsaev.twitterdarkbanner-9K2GY8824J

Update:

Now also available for Google Chrome: Twitter Dark Banner for Chrome

Enjoy.