In other words, you best bet for a graphic designer. The same thing applies to printing. I don't advice you to start out with printing thousands of copies without knowing whether the book will sale or not. When you book registers an admirable sales history, then it is time to opt for at least a thousand copies. Black and white text is cheaper.
Colored inks are expensive.
These are known as PMS colors. If your book is softcover, it costs less. If it is a hardcover, it is more expensive. You will not only reduce cost but also be able to manipulate the entire text as you desire. Monocolor covers costs less than a two, three, four, five or more colors.