No 2D dock in OS X Mavericks! Apple disabled it.
So, Apple removed the ability to set a 2D dock. It doesn't work by changing the terminal parameter nor by using any of the other third party apps.
The 3D dock is ugly and you can't even change the grey color to black or something else.
Even the taskbar and superbar in Chrome OS and Windows is much better in terms of functionality and aesthetics.
There are some nice improvements in Mavericks, but no 2D dock is a big annoyance.
If you guys know of any fix for this, let me know!