If I'm seeng things right from the pics it looks like 1 and 2 are blue, 3 black and 4 dark blue. Is that accurate?
As for gender, I won't even begin to guess! I spent 8-10 weeks trying to sex the first 5 I bought and just couldn't figure it out. Then I realized they were ALL boys! Now I wait...
Chick 4 either black or dark blue. Still too early to know. I had 2 blacks Roo's last year and it took forever to tell that they were actually black. I would love a black pullet, just didn't need anymore Roo's!!!