strange Archispirostreptus gigas coloration

[Le Wasp]

I had a black female giant African millipede who laid eggs some years ago... and now one of her offspring is a strange grey color. Is this some rare color morph or could something be wrong with it? The odd one is in the lower right of the photo, and a normal one is on top. This one has been grey for a very long time, and I'm pretty sure it's molted and remained the same color. Also, I don't know who the mother mated with, because I apparently bought her when she was already pregnant.

 

[J Morningstar]

I at one time had many AGB's There were jet black ones, slightly brown ones and very red legged ones that may have been cross bred with some smaller red and black ones which make for a very strange hybrid. As yours have stripes they look to be of the lighter variety, and as long as your grey one is happy it is probably a mutant. Which I like.