If you have a recolor of that particular maxis mesh and you have the pack installed, you can do it pretty easy in SimPE:
1. Open a new file.
2. Go to the
Tools menu and go to
PSJE > Body Mesh Tool > Extracting Stage. You will see a box entitled "Sim Mesh Extractor" pop up.
3. Click
Open, and find a texture/recolor file linked to the maxis mesh you are looking for, and once again, click on
Open. The extracted mesh files will appear in the resource list.
The other way is if you know the exact name of the mesh in question. You'd open the Sim Mesh Extractor once again, only this time typing the name of the mesh (ex. efBodyPajamasClassic, tmBottomNaked, amTopJacketTshirtHang, etc.) into the
Base Mesh Name field, then click
OK.