Indeed that's a puzzle that only US knows. Does make me wonder that's for sure. There are Alot of people that have channels including myself for same reason just wanted 2x colors , for specific hilts so they can buy ore sabers on general and save some cash in the process. I hope it's not gone all together.
Unless US loves us so much and because sales are through the roof they just offer 4 channel only and at a lower cost. That would be. A nice day dream