I've finally done something I've been wanting to do for a long time now. I've had an old PC lying around that I built in high school and haven't really used properly since college. A year ago, I tried to bring it back to live as a music-only machine, but the aging copy of Vista was too much to battle against. I finally decided it was time to break my long relationship with Windows and erase it completely in favor of a fresh Ubuntu install. Originally, I tried the 10.04.1 Lucid Lynx distro, but the software updater quickly started breaking, so I had to manually upgrade to 10.10 Maverick Meerkat, which doen't have full support, but I don't care cos I'm edgy that way.

I'm loving it so far, with only a few hiccups. If any of you have aging PC hardware and want a fresh lease on your computer's life, I strongly recommend you take a look at Ubuntu. My computer feels like a brand new machine again, and I haven't touched the hardware since 2005, so I'm impressed to say the least.

Big thanks to Paul Temple for helping me get everything set up.

Thanks to @_Everaldo, I learned that the new Twitter for Mac does, in fact, have a "secret" alternate icon in the Resources folder.

If you would like to switch to this secondary icon you will need to go to quit Twitter.app > Remove Twitter from the Dock > Go to your Applications Directory > Right-click (Option + Select) the Twitter app and select Show Package Contents.

Navigate to Contents > Resources. In this directory, you will find files called "Icon.icns" and "Icon_2.icns".

Drag both these files out to your desktop and delete the originals. Rename "Icon.icns" to "Icon_x.icns" or whatever you want, then rename "Icon_2.icns" to "Icon.icns". Drag the newly renamed alternate icon back into the Resources folder and enter your computer's Password when prompted.

Go to the Force Quit menu (found in the  drop-down in the Menubar) and Relaunch Finder. Relaunch Twitter.app. Your new icon should be the alternate icon. 

I would recommend keeping the original in case you ever want to switch back.

Update: Found another alternate icon for Twitter for Mac on Dribbble.

Also, here's another really sweet little hidden feature of Twitter for Mac!