I am looking around for nice book templates, and I am quite disappointed. I found similar questions on tex.stackexchange (e.g. Good LaTeX template for book about maths), but the book templates usually offered are either "book", "amsbook" or springers book template.
All of them I find rather disappointing, I am looking for something slightly more colorful or more polished.
I guess publishers don't publish latex templates for their book style, but is there anyone who is aware of a book template which is more polished/professional-looking/colorful than the amsbook template?