Yeah that is what I was thinking, I think it's a random something else -- Hoover's might have made a mistake at the incubator lol It's alright, we have somewhere along the lines of 11-15 pullets coming up so its not a huge deal and we have a rooster condo for unwanted boys where they can live out their lives together -- currently holding 2 but has room for 10.
I have also had a 'pinky comb' chick that ended up being a pullet. Time will always tell
You asked about how to tell sex from down color and I read about it here. I know "it's just a blog post" but she is knowledgeable.
Sapphire Olive Eggers are in fact crested so perhaps that's it. It will be interesting to see what happens.
So far in this batch I have 2 Cockerels for sure (I am like 95% sure this is a Cockerel. I named 'her' heather when I thought she was a pullet, but idc, I'm keeping that name boy or not) and we don't need 3 so will have to choose from them who stays.