def highlight_row(row):
    """
    highlight mutations in yellow and refseq in silver.
    :param row: row of dataframe.
    :return: row of colors.
    """
    mut = row.mut
    color_list = [""] * 7 + ["background-color: silver"] * 2 + ["background-color: yellow" if i == mut and i != 'N' else
                                                                "" for i in row[9:]]
    return color_list