However, I felt rather awkward being there with no real purpose, so I just casually began asking some questions.
I noticed the mare had a full blaze face (she was grey, but of course whiter for her age), and her mane was two toned in divided portions from darker grey to white.
I asked if she perhaps had a paint parent to which they laughed and said, "No, she's half Arabian half Quarter Horse." I corrected myself and asked not if she was part paint as a breed but as a color. They weren't sure.
I also asked what color she was when they first got her (they claimed to have owned her since she was 6 months old, and I was curious of her base color). They again laughed at me and said she was grey when she was born. >_< I laughed good naturedly and said that I meant what was her base color since all grey horses are born a different color, but yet again he couldn't tell me. (This, among so many other things was VERY suspicious to me)
Well long story short, we ended up leaving without the horse even though my friend decided to buy her. (Complicated reasons). But when we pulled away my friend said to me, "One day you're going to make people mad telling them things about their horse."
Now I didn't consider anything I'd asked or "informed" these people as rude or out of line. So I have wondered since then where others think the boundary lies when you've been informative and have said TOO much.
Personally I don't think I said too much or that they should have been mad about it.