the black roo over chocolate hens is just going to give you all blacks, porbably why you had so many of them, works the same in blue breeding as well.
IF they are all pure duns you have, then yes, you have 2 khaki, 1 dun, and 1 black there, the khaki being the lightest ones
IF they are all pure duns you have, then yes, you have 2 khaki, 1 dun, and 1 black there, the khaki being the lightest ones