Book designer

Good evening, I need some help. I would like to know whether a" book designer" is the person who assembles the material produced by an author and decides on colours, illustrations, covers, etc.
If this is not so, what is the English for the person who does this work? Thank you.

Yes, that would be a book designer.

As a separate comment, speaking as a part-time Web designer and instructor in Web design, please save bold text for items that you need to emphasize. When you use it for everything, it loses its effectiveness. It's like shouting: if you always shout, what will you do when you really need to shout? Besides, nobody likes to be shouted at.

Thanks, and sorry; it wasn't my intention .