If you fancy a change from the standard MMS colours and layout on your Samsung Galaxy S II device, take a look at this pre-themed MMS apk posted by XDA Senior member gh.rohit.
The XDA forum member liked the themes so much that he extracted the app from a ROM, so credit goes to XDA Recognised Developer Crysis21. The app contains the stock theme plus four new ones. To install, backup your existing MMS.apk from Root Explorer by renaming it to mms.apk.bak, copy the new app to system/app, install, and restart TouchWiz Launcher.
You can check the themes from the message settings.
For more information and to download the apk, head on over to the forum thread._________