I kept holding out hope for my recent Legbar, thinking the orange, well developed comb was just a precocious fluke. Mind you, this chick is of a breed where they can be autosexed, the pullets having distinct dark chipmunk stripes and dark heads and the cockerels are a washed out blurred mishmash of no distinct markings and light heads. As they feather out, the girls have bronze breasts and the boys a grey barring.
My chick was a classic pullet at hatch. By age four weeks she looked in every respect like her egg donor, a miniature copy of a Cream Legbar hen, with no light barred feathers and a dark bronze breast.
After the comb began to turn yellow early on next to the other Legbar chick's pale washed out comb, I suspected it was a sneaky little cockerel. Around week four, I started cuddling the chick and parting the back feathers, looking for that first tell-tale orange pin feather. The roosters of this breed have bright orange saddle feathers and orange wings. Hens have no colored feathers, just brown and shades of greys.
This week, at age seven weeks, I spied the first of the orange back feathers and going by the redness of the comb, if this seven-week old chick was a pullet, she'd be ready to lay eggs. Game over. I got me a spare roo. Good thing I named the chick Toots. It'll serve him okay and not embarrass him too much.
There is a limitation on trying to judge comb color from photos over the internet . My computer doesn't pick up subtle pinks. Even in real life, different people can perceive color differently. Variations of reds and greens are colors people can often get into brisk arguments over. Trying to judge these colors from a photo on a computer just isn't going to result in definitive conclusions. Only the OP can judge for themselves what colors they are seeing.
The best way to judge color of chick combs is to compare them to each other. The girls have virtually no color to their combs until nearing maturity. The boys combs will begin getting color, yellow at first, around three weeks. By comparing your chicks, this difference is very noticeable. It's your very first clue you may have a cockerel slipped into the picture. I've never had a yellow comb at three weeks turn into an egg-layer.