from typing import Dict
import re


def eye_color(full_passports: Dict[str, str], key: str = "ecl") -> bool:
    """
        ecl (Eye Color) - exactly one of: amb blu brn gry grn hzl oth.
    """
    # ecl must have either of these in the list
    field = re.split(r'\s', 'amb blu brn gry grn hzl oth')

    if full_passports[key] in field:
        return True
    return False