So the lessons I learned from keeping Taiwan Bee shrimp:
RO water is not necessary, but certainly helpful in order to maximize baby survival. I use Salty Shrimp Bee Shrimp GH+ remineralizer from Alphaprobreeders.
The genetics for most of the variations of Taiwan Bee shrimp are already in BKK/Panda. If you are patient, you can start with one variety and end up with many flavors of TB.
The "shadow" variant seems to be quite common. In my tank, the black and white Panda is less common than the Shadow Panda.
Red Wine/Ruby Red is much nicer in person than pictures indicate. As juvies, they are not colored up as well as BKK/Panda. As adults, they look amazing.
You can get some really nice looking hybrids if you use nice CRS/CBS. Some of my CBS hybrids have totally solid black on them. The white is not quite there yet.
Have a happy new year.