Your best companion to Theme LG System Apps to your liking.
Main Thread : Here
Compatible with LG Phone running Lollipop:
G3 and More
Phone/Contact Dialer Theming using Color Pickers
Dialer Themes (Allows to theme the brand dialers on top of theme)
More will be added soon.
15 Days Trial Version :
Complete Free to use version with all features unlocked.
15 Days usage limit.
[Buy License key to use the module after trial expires]
Free Limited Version available after trail.
Also, Available through xposed Repo downlaod section, Search Tag: "Lg Apps Theme Engine"