Great Hall floor in the studio tour

[Burke96]

Hello and nice to meet you all, fellow witches, wizards and magical creatures.
Has someone else realised of the difference between the Great Hall floor in the Studio Tour and the movies floor? I’ve wondered for ages.
If so, does someone have any theory or explanation?
Cheers from Edinburgh.

[patricio]

I don't remember this. I remember they mentioned something about the floor when I was there (this was six years ago), but I don't recall they mentioning it was different. It is visually different? Easily noticeable?