I was recently trying my hands on how to develop a chrome extension and just for fun I made this first simple extension that replaces old facebook emoticons with new-to-world cool simple emoticons. The new emoticons come from David Lanham and the set is named riceballs.
The icon set contains all the emoticons we use on facebook. Have a look. Some of the icons are not available in the extension though.
My extension is on github at https://github.com/praveenpuglia/New-Faceboook-Icons.
If you are a developer then just clone the repository and modify it the way you want.
If you are a normal user, just download the CRX file and then follow the instruction provided at the above github link.
If you like it, like the post and feel free to comment if any changes are required!.