I've always thought that beige and buff were virtually interchangeable and definitely lighter versions of brown but no. Buff is considerably more yellow. Like a watered down gold. If you want beige, consider searching for Tan or Sand. I have no complaints with the quality of the paper only the description of the color.
WARNING: If you are thinking this is a natural tan color this is NOT. The color of the paper was a bit too yellow for what I was going to use this for. Think "Canary Yellow" instead. Very bright and almost obnoxious for a "buff"