Types of Rolex gold

[Njkdog]

Hi All?, can you tell me if there are different kinds of yellow gold used? Some gold look really really yellow, somewhere very very pale, and everything in between. I know through the years they’ve used both 14 and 18 karat, but I don’t think that would make this big of a difference like in the photo. Is it just lighting make a difference? Or are they really this wide arrange of shades of yellow gold?

Thanks!