What page exactly does it say what Black Beauty, the horse, looked like? I can't find it.

Answer 1

That depends upon which of the many editions of Black Beauty you're reading. Start at page one and keep reading until you find his description.

Answer 2

How about the chapter... Aren't the chapters the same?

Answer 3

Yes, the chapters are probably the same.

Here's the online version.

http://www.literatureproject.com/black-beauty/index.htm

Beauty's color is described in the first chapter.