They're called 'CoG MAP filter 11_01.zip' and 'CoG MAP filter 11_01.zip', and are located in the Members Club: Members downloads. (The same place as the alternate font download.)
Just download them and swap out the main map .PCX file with thses. Be sure to back up your original! They're sort of big downloads, (~61mb each).
Here's what they look like:
This is 11_01, which is more of a rough, grainy look.
