Are both your white pen and bacground colour RGB 255, 255, 255?
Or at least the same values as each other?
I just change my background to white and could see no discernable difference.
I just check the "Automatic pen colour visibility adjustment in model views" option in the Work Environment (on screen options).
This makes a slight difference as it will be changing the white pen to grey if you have that option turned on (I always thought it went black on a white background but there you go! - that's one reason I don't use white as a background).
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11