def find_most_common_color(image):
    """
    Find pixel color that is the most commond use in image
    image: an Image object
    return: the most commond color
    """
    width, height = image.size
    # find pixel colors from image
    pixel = image.getcolors(width * height)
    
    # find most common color
    common_color = max(pixel, key=lambda t: t[0])
    return common_color[1]