Thank you

The last idea I can think of right now, is playing with different shaders. Just set up a quick map, maybe add some lights. Next place trigger zones around the map, and put in their main script some of the posteffect shader scripts. Then run around your level and walk into the different trigger zones and see which one you think looks best, if any. Next is then setting up the shader for your level. Here is how to do it
1. find the FX. file you liked in your effects folder under postprocess.
2. copy and past the .FX in files\effectbank\ps_2_0\
3. delete the "post-bloom" and rename your .FX file to "post-bloom"
(PS) don't forget to save a backup of the original ps_2_0. If I haven't been clear I can post some pics also