If nothing else it would be interesting to know how to bulk up something like this. I spent a happy half hour this morning looking at the 1,000's of the sibirica we have in flower and I would say that there is very little variation in colour, some are a bit darker and some a bit lighter, but only the one striped one and the white one. There are a few million seedlings too.
There is a striped Scilla, S. rosenii with a named form which has a stripe down the petals, I have it in the garden ,but not in flower yet. The flowers are different from S. sibirica though. Will post a picture when, if it flowers.