1) What is rro-theme? I quess, you meant VR Theme. Yes supported, however I didn't see any copatible for us with *.qmg icons. If you want, send me link with PM, I'll check it and let you know.
2) Note Launcher included in the Rom supported theme, which made @LeoDeos in Extra-mod, IMO this is easier way for you or use Wanam Xposed with Tinted Status Bar.
No i meant rro-theming here is a link: https://plus.google.com/+Seanhoyt/posts/U8Ky3bokK4X