I have 7 Bantam Blue Wyandottes. There are 3 blue and 4 splash. I think they are ALL cockerels! 4 weeks old.
In the first pic I made a noise to get their attention.
Here are comb and wattle pics of Splash #1 and Splash #2.
Splash #3 and Splash #4
Blue #1 and Blue #2 and Blue #3