WTB - Proven BLUE Layer(s)

[CaseFarms]

Hi - I promised my son blue eggs, so 6 months ago I bought 2 "Ameraucana"s and a RIR (knew that one wouldnt be blue). They just started laying. Super happy about that, but hoping to still save face (did I mention that I told my entire neighborhood and family that I was raising hens that would lay blue eggs? Of course they all laughed at me, stating that there is no such thing) and find one or two blue egg layers. I have enough room to add a couple more, would rather buy one or two that are already laying if possible.

Thanks in advance!

I am in San Diego, hoping to find something in this area.