How can I add this feature onto my SMF forum?

[itskadenhere]

Hi guys! I have been wondering i f I could add thismod to my forum - and I have looked on the mod site, on google, and anywhere else I could think of.
So, can I add greentext, kind of like 4chan, where add a > infront of your text and will make the line green.
If you want an example just head over to 4chan.
Example
>yo
would make that line green.
Thank you!