I wasn't with my mum when she bought my chickens as one week old chicks,she told me she had the choice between brown or black and she chose brown ( Next time, it'll be one of each,can't tell them apart anymore!) I don't know what breed they are,some say they might just be production,Rhode Island Reds, or Sex Links, I wanna know! Ahaha if anyone could help me that would be so great 
Here they are about 12 weeks old and going through their juvenile molt.

Here they are about 12 weeks old and going through their juvenile molt.