This may be an issue with the files provided or something that happened in the conversion process but the front matter of the book states the photographs are color (point B below) while in reality throughout the book they are black and white.
For the purchase price I am satisfied with my purchase and while vyrso makes no claim the photographs are color the book does make the claim so either a discussion should be had with the publisher to see if the situation can be addressed by obtaining files with the colour photographs or if it is a conversion problem it needs to be corrected.

https://vyrso.com/product/21455/illustrated-life-of-jesus