I was annoyed to find that it was missing the colour pages (I got a refund for it, so I'm happy with the seller, however). I then bought a second one from the same seller (the last one they had) and it, happily, did contain colour pages - 14 of them (7 leaves).
I'm wondering if any other members here, perhaps from the UK, own this book and can confirm for me that this is indeed the number of pages it should have. I would have suspected there should be 16 pages (8 leaves), but it doesn't look anything has been torn out or otherwise removed.
And finally, for those who don't scour the wiki thoroughly, some of these pictures I took of the book might be interesting.
Frank talk of Hidden Palace and Dust Hill way back in 1993:
Picture of Aquatic Ruin with "Neo Green Hill" Title Card:
Picture of early Beta Level Select with "Sky Fortress" (!):
Pictures of Sonic CD (what appears to be similar to the 510 version's FMV player and an early Special Stage):
Unusual art of Tails:
I will post the whole thing eventually, since I have a spare copy I can scan.