=INSTALLATION=

Extract the materials folder to your left4dead directory.

Then, open up pak01_dir with notepad++ and find these lines:

$baseTexture "models\survivors\manager\louis_color"
$baseTexture "models\survivors\manager\louis_head"

And change them to:

$baseTexture "models\survivors\manager\louis_color2"
$baseTexture "models\survivors\manager\louis_head2"

And save.
Enjoy!
=MilkyWay=