When ordering my S3, choosing the seats seemed pretty easy. looking at many dealerships, all the seats i saw seemed to have white inserts. I looked on the configourator and decided on the Two Tone Silver Leather, as in this picture:
when I picked up the car, I shook my head, as The seats looked white! I argued that i had ordered the Silver inserts and showed the dealer on the website. He agreed they looked very different and went off to get some fabric samples.
I indeed came back with the white and silver ones and we both agreed they were very different. We went out to the car, held the silver sample on the seat and they were exactly the same colour and the white ones looked clearly white in comparison to my seats!
How odd I thought. To cut a long story short, I agreed that Audi got it right and it was some what of an illusion!
They look darker in the dark, but never look as silver as the picture does.
All I warn is, check in person the colours you want, even paint as the website can be misleading.