Help needed with a team colour issue

I've hit a snag where I've been devloping a map for some time and for certain reasons I need to change an established teams colour.
I remember in Starcraft maps back in the day teams could be black or neon, colours not actually supported by the game.
Is there any way to do something like this in Warcraft III?

My red team needs to be white (or grey) now. I can't just chose "custom colour" because new units produced by them will be red. I don't want to Edit all the properties to change their colour because all of the triggers (of which there are too many to count) point at "Player 1 - Red"

Is there an easy way out?

get wc3imageextractor>replacetextures>teamcolor
edit it to the color u want

Excellent. Thanks!

Took your advice and tried that, and it worked...or so I thought.
In the editor, everything for player one is now White; in the Game, they all revert back to red.
Got any ideas?

Thanks anyway for the help. It's given me a start.