every {@ticks} ticks:
    loop {colorbeacons::*}:
        if data value of block at loop-value is more than 14:
            set data value of block at loop-value to 0
        else if data value of block at loop-value is 0:
            set data value of block at loop-value to 14
        else:
            add 1 to the data value of block at loop-value