color of bunny

[mikenlisa11]

I have a new litter of Mini Rex bunnies... The mom is black and dad is Castor... I dont know anything about their background, so no clue on what colors are in the background. Anyway, what color are these two called?

 

[SableSteel]

The top one is Blue Harlequin, and the bottom one is Opal.
Watch out with the opal for some faint harlequin markings as it ages (darker brinding or stripes on the belly especially), that would make it a Harlequinized Opal which means it carries the harlequin gene (which is possible given that it has a harlequin sibling - but also unfortunate given that Harlequinized Opal is not a showable color)

 

[mikenlisa11]

Thank you