Yeah, motorolas are known to have changes compared to standard AOSP.
(Like PhoneWindowManagerWithPartialDisplay class which is not even present in AOSP), and others.
The reason why icon is not getting the color is because they probably changed the resource names of signal icon images.
Sorry, but it is unmanageable for me to make adaptations on per device/per rom basis.
That would bring a lot of chaos into the source + making exception for one ROM (like I already did for S4 GE edition)
would oblige me to do adaptations everytime new user with another device/rom diverting from AOSP comes reporting a bug.
That would be an endless loop making me do adaptations instead of implementing new features. It would not be fair
to owners of MediaTek devices this mod is primarily targeted for.
Sorry, I hope you understand.