Unzip these to your \painkeep\maps\    folder.

http://sh.stonks.com/files/test_lits3.zip    8mb

Some might seem harsh, if you don't like any particular one simply delete the .lit file that corresponds to the same map name.

http://mhquake.blogspot.com/2009/05/mhcolour-next-release-requests.html

He made it look at the textures and light the surrounding areas based on that, this version has no controls but future versions will. Some of the lits turn out very bad, but some turn out really nice. Basically, its fake light. It adds an orange glow above lava areas and green above slime also.

Here's a good example, Thing's PKTS12, an ancient map:


Here's ukooldm2, shows how it sees lava (or slime and lights accordingly):


Here's an example where it backfires because the teleporters are made out of a lava texture:


BTW, the pkts12 lit is not in the zip, grab it here and put in your maps folder:
http://sh.stonks.com/files/PKTS12.lit

Here's a link to the actual executable app, but it also includes the pre-made lits for all id maps:
http://www.quaketastic.com/upload/files/misc/ID1_LIT_Pack_14th_May_2009.zip

I tried that with various light utilities to no avail. This one has it's quirks but some lits come out very nice. The worst one is sphinxwalk - for some reason it casts green light all over the place. The ones that came out funky I omitted from the zip.

Shame PKA doesn't have chat bubbles for the dead guys heads.