Uh, the two really dark ones look like chickens to me.
Spaulding blood tends to make the colors darker and the whites whiter, perhaps you have some Spaulding in your flock? Also whenever there is a white gene it will also affect the color. That is why WE and Silver tend to be a bit washed out where there is color. Look at the last two pics, the Spauldings dark areas are darker and the IB is lighter and washed out.
