Question
3 months ago i put down a leaf of rob's shadow magic,well now it has a new baby
but the new one all the leaves is white.i have it under lights, why did it  grow white

Answer
I have never heard of Rob's Shadow Magic, is it the name of a violet?  Anyway, I do not know why leaves would grow completely white.  You can get help from the African Violet Society of America, or you can consult another expert.  Good luck.
Their address is:  AVSA.org