Default [Q] odex help

hi guys i recently rooted my cubot s208 running 4.2.2 jellybean with odexed rom. I saw a lot of threads saying that you can't really theme the app which has an odex file as it is more complicated, but the thing is I deleted mms.apk and mms.odex from system/app and replaced it with google hangouts with no odex file and it seems to be working fine with no errors at all as a system app, so my question is that if the apps with .odex files cannot be themed easily, can i theme the apps that move to system/app without the odex files?