Describir: The preservation of color films :

 _    _     _____     _  _      ___     __   __   _    _     ______    _____   
| |  | ||  |  ___||  | \| ||   / _ \\   \ \\/ // | || | ||  /_____//  |  ___|| 
| |/\| ||  | ||__    |  ' ||  / //\ \\   \   //  | || | ||  `____ `   | ||__   
|  /\  ||  | ||__    | .  || |  ___  ||  / . \\  | \\_/ ||  /___//    | ||__   
|_// \_||  |_____||  |_|\_|| |_||  |_|| /_//\_\\  \____//   `__ `     |_____|| 
`-`   `-`  `-----`   `-` -`  `-`   `-`  `-`  --`   `---`    /_//      `-----`  
                                                            `-`