Not sure this applies but in a few of your photos it seems the walls/surroundings may be a pale beige or cream color, which your diamond would pick up and reflect. Otherwise, FWIW most of your photos do show (to my eyes) a white/colorless diamond.
Thank you marymm! Good catch! I do have cream/pale beige walls. I think that combined with the warm lighting was bringing out color that I wouldn’t have otherwise seen. That and my paranoia!