@classmethod<EOL><INDENT>def arg_color_axis(cls, parser):<DEDENT>
group = parser.add_argument_group('<STR_LIT>')<EOL>group.add_argument('<STR_LIT>', type=float,<EOL>help='<STR_LIT>')<EOL>group.add_argument('<STR_LIT>', type=float,<EOL>help='<STR_LIT>')<EOL>group.add_argument('<STR_LIT>',<EOL>help='<STR_LIT>'<EOL>'<STR_LIT>'<EOL>'<STR_LIT>')<EOL>group.add_argument('<STR_LIT>', choices=('<STR_LIT>', '<STR_LIT>'),<EOL>help='<STR_LIT>')<EOL>group.add_argument('<STR_LIT>', nargs='<STR_LIT:?>', const='<STR_LIT>',<EOL>choices=('<STR_LIT>', '<STR_LIT>'), metavar='<STR_LIT>',<EOL>help='<STR_LIT>'<EOL>'<STR_LIT>')<EOL>group.add_argument('<STR_LIT>', action='<STR_LIT:store_true>',<EOL>help='<STR_LIT>')<EOL>
Add an `~argparse.ArgumentGroup` for colour-axis options.