coloring outside the lines

i didn't knit on the entire nyc trip, but i did pick up my socks again last night. this time around, the stripes are not lining up neatly. i have several spots where the colors overlap and so far the entire sock is green, blue, and yellow. but i'm sure it'll start behaving again soon. i haven't knit socks in so long, i'd forgotten how much i liked it.