As of this season, raisin is still on the SO list, but it is not available in box, because box in general is not in the SO system, box can only be ordered at podium.
Because I just tried to SO a box raisin birkin and my SA was filling the application online whilst asking for my options, and I was told, box is not available to SO, so i would have to choose another leather if I still want raisin, and if I only want box, then they will order one for me at the podium but i will have to pick another colour.