I have seen both, they used to sell the second one in a book store close to my place a couple of years ago but recently when I went again to see if it still was there I couldn't find it. The first one with yellow cover I saw just last month in the MusikHug store in Lucerne. I skimmed through it and it looked quite nice. I really should get a Morricone book.
I thought that it was very reasonably priced considering you get a large format book with loads of illustrations and four cd's. The sound quality on the cd's is excellent and the book is delightful to look at and an interesting read.