Would an almost-snow white colour in a prospective hunt horse put you off? I mean, all those early-morning baths (OK, so we have running hot and cold, so it won’t be too painful, but still), showing every muddy splatter, etc.
Assuming everything else about the horse looked fairly useful and usable; just that you could be fairly certain that keeping it clean and presentable was going to be a bit more work than cleaning the average bay or chestnut?
I did warn you, it’s a shallow question!