This is one of those shots where the true color of the shot simply doesn’t exist in the Blu-ray. Note the magenta of the cup on the left, which is supposed to be white, still retains a magenta hue in the correction. Similarly, Luke’s dusty offwhite shirt has too much green in the highlights and too much magenta in the shadows, and the correction still doesn’t completely remove these inaccuracies.
This picture skews red but still shows how Luke’s shirt is definitely not white like Leia’s gown:
