'Return a list of background colors for a sequence'

@staticmethod
def colorsFor(seq):

    colors = ['red', 'lightgreen', 'cyan', 'yellow', 'orange', 'magenta', 'pink', 'grey', 'brown', 'white']
    (slen, clen) = (len(seq), len(colors))
    reps = max(1, (slen / clen))
    colors = (colors * reps)
    colors = colors[0:slen]
    return colors
