import media

if __name__ == '__main__':
    filename = media.choose_file()
    pic = media.load_picture(filename)
    media.show(pic)
    
    for pixel in pic:
        value= media.get_blue(pixel)
        new_blue = int(value*0.7)
        media.set_blue(pixel, new_blue)
        
        value= media.get_green(pixel)
        new_green = int(value*0.7)
        media.set_green(pixel, new_green)   
 
    media.show(pic)