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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def is_valid_rgb_color(value):
 """Checks whether the value is a valid rgb or rgba color string. Valid colors consist of: - rgb(255, 255, 255) - rgba(23, 34, 45, .5) """

    if not value:
        return False

    regex = re.compile(RGB_COLOR_REGEX)
    return bool(regex.match(value))