Actually while the reasons the person who chimed in earlier is wrong, the custom one here would be amiss as I believe they were asking for a RRx LED, and I only have one provision for the on-board diode, so an external resistor/diode would still be needed. For BBx or GGx this would be a great choice but RRx will require external resistors.
That being said I'll only make custom ones from time to time if I feel like it, and right now I'm super busy so don't expect any anytime soon.
Finally, I'm phasing out the Z6 so it won't be an option anymore, the NECree is much more efficient and is easier to install so just makes sense, so I recommend it for RGrB with my boards, and TCSS for custom colors for now.