i have been wondering if Tango, our 1 month old leige fighter, is a male or female. Tango has been starting to grow in some odd orange, white, and somewhat tiger type feathers. Here is a couple photos of Tango.
Those are just hackle feathers, and look normal. I don't see anything that says cockerel EXCEPT the rust coming out on the wings.
The comb doesn't say cockerel... but I'd keep an eye out. Typically 4 weeks is too young to properly sex, and feather sexing only works on specific crosses.