Lighting and Colormaps

I'm working on an entry for the OLDC, and I'm having some problems with making the lighting fade to where a death pit will be. As far as I can tell, I followed all the instructions, unless I misinterpreted something, which I very well may have done... I have the WAD here, so if someone can take a look, that would be great. You see, it's supposed to be that the lake in the center is flooded with a bluish colormap, and there are Lightblock FOF's that make it darker the deeper you go. However, only the top part and the first FOF down are bluish, and the rest of the light blocks down don't even show... Any advice as to what I screwed up?

http://www.mediafire.com/?daqmy44qoqruhl7

A simple fix. All you have to do is instead of giving the linedefs the Light Block Effect or effect 200 give them effect 201 or the Half Light Block effect. You'll see the problem fixed immediately.

Awesome! Thanks so much! Now I can get on with my map!