Need help gendering these chickies

[Blorengo]

So my wife and I got these chickies from a local bucheits a couple months ago. Very spur of the moment. We didn't know really anything about chickens when we got them. But they have been so much fun to take care of. Unfortunately in our city we can't have roosters and we have no idea how to tell the genders of these. And the store couldn't tell us either. We're hoping for all girl's because we're too attached now and this point. We were hoping they were old enough for by now for some people on here to tell what gender they are. They're about 10 weeks old. We have a smokey pearl, 2 rir, a saphire gem, a cinnamon queen, and an Easter egger that the store said was an Amaracuana. Here are some pictures of them. The rir's might be hard to tell apart. I tried to take decent pictures but sorry about the red light. It's cold out here

 

[Jener8or]

The white one is a cockerel (the Smokey Pearl, I'm assuming). The blue one is the only other one I was questioning, but if it is a Sapphire Gem, it would have barring if it was male.

I didn't see any other obvious cockerels.