Hen with different shade of comb

[The_Flock]

Hi Peeps. I have seven 23 week old pullets. One of them, Quinn, a Columbian Rock, looks like her comb is a bit darker, or something, than the other Columbian rock pullet. Quinn has been sneezing randomly (def not anything virus or respiratory as she's been doing it from a young age) but it doesn't seem to be health related. I personally think something's in there or a bit defective.
Her nostrils are clear. She lays almost everyday.
I've asked a couple times about her sneezing on here and nobody seemed too worried about it. So I'm wondering if thiscomb colour is normal, or if I need to pay attention.
The pics include the other CR I have. Quinn is the one in front.

 

[Dottie the Chicken]

As long as everything else seems normal, and she's acting healthy you probably don't need to worry about it.

 

[The_Flock]

As long as everything else seems normal, and she's acting healthy you probably don't need to worry about it.

Thank you. She seems pretty healthy. She eats, is lively and active and is growing. She is a bit on the light side with her weight but her keel doesn't stick out at all. Just light compared to her peers. I'm hoping her comb is just going through a change with the season as it's getting cold and is damp.