Great box. Thanks for the afternoon history lesson.
Tangential thought ... After seeing all these boxes as photos and not in hand, I'm trying to make myself think of the sizes now. About two inches across? So "cute" would be a good word for it.
I can Magic Eye. So if I can see the picture here, I will eventually be able to see bubbles on the dark side of the moon ... er ... the dark side of the moss agate? Okay, I'll try!
I thought I saw green on one which made me think "anti-blackie".
But if it's red and white without the extra color, then "anti-whitie" could work.
http://marbleconnection.com/topic/13092-anti-blackies/