Puffeline

Hello! I'm completely new to this application, but was directed here after asking around! My question is... I have a Morrowind mod which adds different faces. I love the models, but one of the faces has dark, dark purple lips and I would have loved to make them a more suitable skin-toned colour for the race. But I'm uncertain how to do recolouring. And to make it look nice. Any tutorials? It's a small modification, so I'm hoping it won't be far too advanced! Any help is appriciated!