I suppose I'm a little late here, but I figured I'd mention that this exists for posterity's sake (I'm surprised that I couldn't find any threads about it). Besides a bunch of art inspired by some other games, it has quite a few pages of official Silkroad art that you may have seen floating around the web. I'm pretty sure this art was commissioned for jSRO back in the day, and some of it may have been available in a fansite kit from their website, but don't quote me on that. Anyway if you like this kind of art or just want something physical to hold in your hands while you tell the grandkids about your glory days, you can buy it on Amazon (though I can't personally vouch for the print quality as I haven't bought a copy myself). Scans of it also exist, in the usual places.
Here's a blog post about it with some more pictures:
http://www.nattoli.net/entry/369/midori-foo-foo-midoris-book-of-pictures
