Is there a way to add new Flags and/or Race Pics?

[thesilliest]

I'd just like to make my own to use in Singleplayer, that's all. I guess there wouldn't be a way to use them in multiplayer unless someone else had them too, huh? I don't want to edit old ones, if it can be helped - I just want to have a wider selection for myself.

I think it'd be a cool feature for SE: VI if little graphics could be shared in multiplayer so you could use your own race avatar/flag.

Anyway, thanks!