any way to change companion appearance?

[midya]

i want to change Lydia's hair, face and name.

I'm wondering if there is any way to enable the showracemenu command for NPC's?

 

if not, what do i have to do in order to change those things? (hair, face and name).

[NoAardvarksAllowed]

You can do that by making a new plugin (.esp) for your game, using either the CK or the NPC Editor (though I'm not sure if you can change somebody's name in the latter, and I'm at work so I can't check). Just search for Lydia by name and she should be easy to find. Edit her and then save the plugin. If you do it in the CK, you have to have her record (i.e. her line in the Actors section) highlighted and press ctrl + F4 to export her facetint properties to your texture file, otherwise she'll end up with a gray face. Then make sure your game loads the new .esp as you start it up.