Both blue and brown tend to lighten in the eggs as the laying season progresses. That means green eggs tend toward light blue. The amount of brown (what makes an egg green rather than blue) is very dependent on the genetics of a particular strain, more than what breed. I have 6 strains of show Ameraucanas and some lay green eggs, others are sky blue. My Cream Legbars almost all lay bright blue eggs without any trace of green, but an occasional pullet will revert to a bit of green.My Whitings started laying about July/August of last year, and would lay daily, light blue eggs. As of mid Dec, I get several a week from each hen, but they are paler blue.
I''m hoping what people are saying is true: " when the hens are older, they lay darker eggs", but am not counting on it.
If that is true, than my BCM's eggs are going to look nearly black! (slight exaggeration, but you get the drift). HER eggs are dark chocolate now - her first laying season as of last Sept-ish.
One thing I can say about the Whitings is that it's the first true blue colored egg I've ever had (tried CLB, True Ameraucanas, Rumpless Araucana, and SBEL - all had green in them).
Also, the WTB's are great at avoiding predators, flighty but will eat out of your hand, great foragers, low feeders, and have
proven to be cold hardy (Michigan).
Our dog got out and went after our free ranging chickens which included some WTB's. By night fall we were still missing some Silver Lace Orpingtons, and a WTB. I was pretty confident my WTB would show up the next morning despite our property having coyote, fox, raccoon, opossum, weasel....
Sure enough, that WTB was near the coop come sunrise!!
On another note, there is a lot of feedback on mcmurray website that people have gotten green eggs from their WTB.
BOTH of mine lay the light blue egg, so Hmmm.. Not sure that that's all about?
I believe you can lighten the brown/green color by crossing to a white egg layer. I cross my Black and Lavender Ameraucanas with California Grey pullets (basically a barred leghorn) and the resulting black sexlinked chicks lay lots of light blue eggs. They lay so well, the blue color fades quite noticably and they look white when put next to a true Ameraucana egg. Technically, these black sexlinks are EE's, but they retain the muffs and beards so well I have to band them to tell them apart from the purebred black ams.