When you say "coloration". Exactly, what do you see. Tail feathers I'm guessing. Still learning the breed. I wish, I didn't have to be concerned about sex. Should had purchased that hobby farm when I had the chance or move back home (Sweet Carolina).
Here is a good side view. I thought a Roo would have more of a white chest? First time Sussex owner. Thanks to all for their replies. But, no questions about comb, waddle, large leg and developing spur. I just hate to give him up, beautiful bird.