There are so many of these, it's confusing. I know that Olive Eggers are any dark egg breed crossed with any blue/green egg breed. But I've seen mentions of F2 and F3 etc Olive Eggers to get other colors of eggs. I've seen some pics of those eggs from the succeeding generations and they are some fantastic colors. I think Sapphires are White Leghorns crossed with either CCL's or maybe any blue egg breed? I'm not sure. I also see mentions here and there of other hybrids involving blue/green eggs. Please enlighten me. What hybrids do you know of and what are they called? Do you have any hybrid projects of your own? Can you post pics of your hybrid birds and the eggs they produce? I have easter eggers with Marans to make Olive Eggers but that's the extent of my project. I don't know if I'll try for F2s. Maybe I will, maybe not.