I have a Macintosh computer, so I can't get much for StarEdit programs.
I use StarEdit Emerald, with flying addons, and I found a weird glitch(?) for making player 8 two colors. I haven't tested it in games yet, due to laziness, but I will in good time.
Place two or more units anywhere, making sure that the units are controlled by multiple players. I selected the units, and made them invincible. I clicked ok, and when it returns to the basic screen, the unit just selected are a weird, different color. And if you click on them again, it says they are owned by player 8. While there are other player 8 units that are the basic yellow color. I don't think it works on every terrain though. I know it doesn't on desert. I guess it depends on the terrain for color and if it works.
Pictures!
1. Showing all the units of different colors, selected.. Aside the basic yellow, Player 8.
http://img93.imageshack.us/my.php?image=picture38ph.jpg2. All of units, clicked and property box comes up. Note no owner, and non-invincible.
http://img363.imageshack.us/my.php?image=picture22wn.jpg3. Now invincible box selected, and clicking Ok.
http://img73.imageshack.us/my.php?image=picture65oy.jpg4. The result! A blotchy pink!
http://img73.imageshack.us/my.php?image=picture72fy.jpg5. Showing that the pink is player 8, next to the yellow Player 8 (When yellow and pink are selected together, there is no owner shown..)
http://img98.imageshack.us/my.php?image=picture85al.jpg