I like the variety of shades in olive eggers. I don't think darker is always better. My favorite olive shade is medium olive green with speckles. I'm trying different pairing for my F3s. This first batch I bred to a cream Legbar roo. Next batch I'll breed to a Marans roo.
I just hatched 7 F3 olive eggers. Dark olive laying hens crossed with Cream Legbar roo. The chicks are all black or blue and barred (white spot on head). Looking forward to see what they lay...:)