Rembrandt's drawings, though monochromatic, deserve to be in color. The variations in his pen lines and washes are part of their greatness, and I've waited for decades to see a book like this. I'm surprised it's in hardcover (I have about a thousand Dover books, all paperbacks) so it costs a few extra dollars, and it's no surprise that at least most of the reproductions are generations removed from the originals, but I'm hardly complaining. Up till now I haven't found a complete color collection of his drawings, and he is one of history's greatest (and most subtle) draftsmen, so this is a gift to the world. If we ever get a book like this reproduced from the originals, it will probably cost over $100.
And regarding the artwork, I'll quote my elder colleague and master draftsman, Don Lagerberg: "The older I get, the better Rembrandt gets."