Got this from http://takagism.net/, recommended by darling Key! It's quite cool, a puzzle to solve, like maybe one of those old Gabriel Knight games but in a really compressed one-room package. Did Crimson Room first, that was quite easy except for two silly non-intuitive things. Then Viridian Room, which was tough, and really had a good ending to finish off the Crimson storyline. Blue Room was a letdown, it seemed like a chicken-feat early version of Crimson Room..
Anyway, try it! I'm still looking for more puzzle pages like this, it's quite cool to play. I was watching Nemesis Game at Key's place and wondering if there was a website with riddles all around, and wondering if I could do such a site..and now this pops up. Looks like it's all been done!