Yeah, not all icon packs will theme all icons. For the few stragglers, try using Icon Changer Free on the Play Store. You can change individual icons to whatever other icon you like. I have to do this for a couple of themes on my One where for whatever reason, the icon pack doesn't theme the camera.
I think I am better off just waiting for a nice iOS 7 launcher to tell the truth. I had one for iOS I tried on the HTC rezound I have been fooling with. It gives all the icons spread out on all the screens and I move them where I want.