One interface for both races you mean? If so that will be easy to implant. because doing the different interface for each race is, seriously, quite arduous...But fun, don't get me wrong, I love doing it, but all the cutting and trimming for each individual resolution is a pain. Everything else is a breeze.
* Edit *
Here's a newer version of the in-game menu. I've tried to do a brassy kind of background...Don't know if I got the colours right...I have colour deficiancy (eye problem) which causes confusions with shades of colour. Good thing photoshop has a colour pallette.

- new menu buttons.png (106.65 KiB) Viewed 11073 times