Yes, the true white ones do have quite a different look about them.
I personally like grays over white but they each have different qualities.
Actually because the true white have a pink skin they are more inclined to cancer, especially around the eyes where the skin is softer. Like paler humans are inclined to burnings, same with white horses (mainly around areas with less hair)
I had wondered that. Not specfically to cancer but of they had additional issues due to their skin color.
Yes, horses can suffer from sun exposure some more than others.
There are some people who tattoo their horses eye lids - like we eye-line our eyes. They do this with black ink to help prevent problems around that area.
I wouldn't know if tattooing them is worth it but it is done by some