Hello, I am new to romhacking.net (at least not THAT new to romhacking in general).

I want to change the HUD/Radar from the PSX game "Alien Trilogy" from GREEN to BLUE.
If you wonder why this might be necessary, take a look here:

The original motion tracker from the movie "Aliens":
http://www.inetres.com/gp/sf/aliens/tracker04.jpg

Alien Trilogy HUD with the motion tracker:
http://www.gamesforyou.ic.cz/hry/images/AlienTrilogy51.png

They made it GREEN. Just terrible. I played this game when it came out and I was bothered by this design-flaw to this very day.

The game uses .bnd files to store its graphics.
I could not find anything about this format and I assume that "bnd" means "bundle" and each file might contain several images.
In the header of the .bnd's you can find the line "DPSXTINFO".
Any ideas on how to hack this?