You know, Meyer is using Legbars in some of their Olive Eggers, that would give you a crest, and if they use them and blue marans or something you should get pretty much that bird maybe. Off their website ...
Olive Eggers are one of our new, eggciting projects for 2014. We are so eggcited about these that we have set up two different breeding programs to create these fabulous chicks. By crossing some of our foundation stock of Legbars, Marans and Ameraucanas we can create these wonderful little hybrids who will lay (drum roll) an olive colored egg! There is no guarantee which of the two breeding programs your chicks will originate from, but you will be delighted by the varied color patterns of these chicks. Though they may all look different, each of them will lay an array of olive eggs, from light to very dark.