Question Gingerbread 2.3.6 mms.apk theme doesn't appear

I have Samsung GT B7510. When i had froyo rom, there were some themes for mms.apk . But after updating gingerbread , the themes have gone. There is no option to choose different themes. When i look at the res fonder in the app i see the different pictures for theme but we can't use it. Is there any way to edit the apk to use this themes? I don't like other messeging apps. Stock app is so simple, and i generaly use swiping right and left to message or call someone who text me. Does all gingerbread roms lost message app theme, or just our phones rom does?