This simple patch, combined with any patches that convert undead --> some race will remove that annoying undead feature (metal lips, or undead spots for example) so that you won't have to look at a draenei for example with gross undead lips.
I have noticed quite a few people complaining about it so I have decided to release it to the public. Enjoy!
Undead -> any race metallic features fix
I have also added a fix for the dwarf beards/eyebrows (only the dark/black ones right now, will update with all beards when I have time.)
Dwarf -> any race blackish beard removal
EDIT: Here is a picture of the effect this patch gets rid of: