Twitter just changed the color of the Twitter for Mac icon to blue. I hate it. Most people hate it.
Don’t worry, there’s hope! I have saved the old black icon and you can return to the old school way pretty easily.
How to update Twitter for Mac’s icon from blue to black:
Download the Black Twitter Icon Pack
Navigate to your Applications folder
Right click Twitter and select Show Package Content
Go to Contents, then Resources
Update the file Icon.icns with the one included in the Black Twitter Icon Pack zip file.
As a bonus, you’ll find an alternative icon that Twitter never used. You may use it if you wish.