Ozzie fathered three litters. His litter with Ruby produced 3 red merles and 1 blue merle.
His first litter with Libby, produced 4 blue merles and 5 black tris.
His litter with Gidget, produced 1 red tri, 1 blue merle and 2 red merles!
Ozzie's father is a red merle with two ice-blue eyes, so I guess Ozzie has color in those genes to be producing these variety of colors.