I'm pretty certain the Blues are all the same personality-wise. Our first Breda order from a different breeder from another State sent us a 4-mo-old Blue Breda cockerel in error. Right out of the crate he was outgoing, friendly, curious, pesty, and a real ham in front of mirrors or the reflective oven door! We thought he was an anomaly being so friendly. We re-homed him with a friend that turned him into an indoor-outdoor house pet because he was so unusually outgoing, unafraid, human- and dog-friendly. After receiving a cockerel in error and having to re-home him we frantically searched for a breeder that might have a Blue pullet available. When our 4-mo-old pullet arrived she was just as outgoing, unafraid, and pesty-friendly as the cockerel had been and these two Blue Bredas were from two different breeders from two different States. So, that experience of ours tells me these birds are fairly accurate to describe as having consistently friendly temperaments. I read that the Cuckoos are shy-est of the Breda varieties and lay tinted eggs so we'll see when she arrives to see what we get. I feel comfortable recommending the B/B/S varieties for ultimate friendliness, good white egg production, and easy on the feed bill. This breed seems to have a preference for dry feed over wet/fermented feed and it takes them a while to warm up to eating different wet produce/fruits/cooked grains like oatmeal, quinoa, brown rice, etc. They seem to have no fear taking hand-fed food/treats almost immediately while other chick/juvenile breeds might take longer to trust a human hand. These guys are busy foragers and check everything out in the yard - they make other breeds look lazy.
Just an example of how busy this breed is -- here she is on the far right head-first inside a plant container checking for bugs or new grass shoots! She takes the job of foraging very seriously and leaves no spot unchecked.
Ok, that's it. You have totally sold us on Bredas!!! We're going to go to Rare Feathers Ranch and meet her pullets in person. It sounds like she only has cuckoo and mottled though, fingers crossed they'll be as wonderful as yours!!