Converts from rgba to rgb

    Parameters:
    -----------
            color : string
                    Color representation in rgba
            bg : string
                    Color representation in rgb

    Example:
            rgba_to_rgb('rgb(23,25,24,.4)''

def rgba_to_rgb(color, bg='rgb(255,255,255)'):
    """
    Converts from rgba to rgb

    Parameters:
    -----------
            color : string
                    Color representation in rgba
            bg : string
                    Color representation in rgb

    Example:
            rgba_to_rgb('rgb(23,25,24,.4)''
    """
    def c_tup(c):
        return eval(c[c.find('('):])
    color = c_tup(color)
    bg = hex_to_rgb(normalize(bg))
    bg = c_tup(bg)
    a = color[3]
    r = [int((1 - a) * bg[i] + a * color[i]) for i in range(3)]
    return 'rgb' + str(tuple(r))