Can you assign unique notification sounds for different people?

[MannyZ28]

On my GS2, the only thing I can adjust for each person in my contact list is the ringtone. I saw in a few videos that Samsung added some more customization to the stock messaging app such as choosing from a few different backgrounds and different text bubble types and colors. I know I can use handcent to have a different text message notification sound for different people, but, for those that have the phone already, is it possible to do the same thing in the stock messaging app?

Thanks!