I understand ka. Actually, I planned to get my first patent but after I read the topic about color transfer and color migration......................(sigh) I changed my mind. I am a paranoid person but pink is TDF. I got a headache. This is Sophie's comment. She is the Chanel expert. I thought that you already read it.
Color transfer is the transfer of another color (blue in jeans for example) to the main color (of the bag). Color migration extends beyond a simple color transfer to include fading. Prolonged and frequent exposure to sunlight can result in color migration on the exposed area. Although it can happen it any light color leather and fabric, patent is known for fading faster than other leathers. Metallic is also known for fading, including the dark colors.