Got the old icon but still have the updated texting that came with the new version!!! Here's what I did:
I put both roms on my pc. Browsed the old rom with 7-zip and extracted the icon from the Mms.apk. (the icon was called ic_launcher_smsmms.png) Then I browsed the new rom and copied the Mms.apk to my desktop. I browsed that with 7-zip and replaced the icon with the one i extracted from the older version. Then I used command promt and used these commands.
adb remount and then
adb push to push the apk to my phone. Restarted phone and the "messaging" icon was changed to the awesome black and blue version
The messaging app has definitely been improved on this update so I didn't want to use the old one. I am now going to do this to a few other apps.
Don, I was using desktop visualizer (which is great) but it only changes the icon on your homescreen. Does not work on lockscreen or app drawer or anywhere else. This method changes the entire launcher icon globally