I may be not the smartest fella, but I supposed that "nadir" means a direction (straight down, a lowest point). I thought that it would be cool to have a "base pair", even in thematic -- a Zenith base, combo too and is an "opposite" colour (maybe Golden Solid Dark genetics?). If nadir here means smth else, not direction - please tell!
Idk if this thread shoudl be here, but netherltheless, Ill repost it to more suitable topic if needed