Cactus / Astrophytum hybrid

I tried to make a strawberry-milk color cactus and crossed Astrophytum myriostigma cv Onzuka x myriostigma v nudum cv khoyo. I sowed seeds on 07/10/09 and grafted 4 young seedlings.
One of them showed once the strawberry-milk color but it turned the color.
The photo shows the current color. I expece some changing in coming spring.