As far as blue eggs go, my feedstore orders from Ideal and all of them except the roo lay bright blue eggs, one lays a slightly greenish egg.
When I crossed back to my Wheaten Am. (beardless fault but from a GA breeder) I got one boy and one girl (some of the eggs got crushed half way through by a fat hen...) They are much closer to Am then their mothers.
(they are staying but are 'mutts' that have a greater than 75% chance to carry the blue egg gene)