Question [Q] [Solved] M2 does not fully apply Xperia themes

Hi guys I got an Xperia M2 D2305 (Android 4.3) just a few days ago and tried installing several Xperia themes from Sony Select. However when it applies these themes only the home screen and lock screen wallpapers change, the navigation bar and accent color do not. Anyone got the same problem and have you got any solution?

Update: Sorry guys I think I know why. This is because I've disabled Developer option. Themes are applied properly when it is enabled. Hope this will help others.