Just flash it via recovery.
1. Hide the sim icons.
2. Change the color of the notification panel in accordance with the theme. You need to restart your phone after applying a new theme.
2. Xposed to enable Superuser Mode. http://forum.xda-developers.com/xa-u...ys-xa-t3439196
I haven't tested it without the superuser mode, please do it at your own risk if you don't have xposed.
I'm also providing the stock SystemUI apk & another modded apk with only hidden sim icons.