There are many things below my belt. However, I would be concerned if any of them were this color:
(spotting courtesy of Drisana)
Even if we are to take this name metaphorically rather than literally, I am still dubious. Below the belt: underhanded, dirty, not allowed. I can see traffic-light red, or corrupted-soul black, but all's-clear angelic white? I don't think so.
Then again, there are people out there who make an average of $1.79 an hour to determine the sex of baby chickens by squeezing out their feces to open their anal vents and look inside for tell-tale male bumps, while somebody got paid more than ten times that to come up with this name. Talk about below the belt.