I knitted these socks, put them on and thought one is greener than the other. So I went and looked at the dye lot, humm, two different dye lots. (now I check dye lot numbers instead of trusting my eyes because they looked the same) I went back to my LYS and got one more of each dye lot and now I have two green striped socks and two blue striped socks. Anyway, my feet love them and I ended up with two pairs of socks!