def get_keyword(text):
    """
    Accept a string such as BACKGROUNDCOLOR [r] [g] [b]
    and return backgroundcolor
    """
    first_word = text.split(" ")[0]

    if len(first_word) > 1 and first_word.isupper(): 
        kwd = str(first_word.lower())
    else:
        kwd = None

    return kwd