I have a pink digi that turns silvery blue when I give it a ton of light. I like the look it get's when it's mixed, so I put it halfway down the tank.
As far as the milli being a scripps... I don't know. When I got it from the critter it was mostly brown and was labelled simply as an aquacultured acro. I know it came from someone "local" that has been selling a bunch of frags to all of the LFS's, but I haven't tracked down where it came from and I haven't seen anyone else in the club with one that looks like this. I haven't noticed any of the skeleton turning blue except for the new growth, but I don't think I've had it long enough to really figure out if that new growth is going to stay blue or change to pink.
Hope you find what you're looking for.