I see. It is greyscale.
languagebank\neutral\gamecore\huds\panels
Look in this folder. you may need to cut up your panel graphic and do the same. This is for scalability, I am guessing.
The only other way would be just using the sprite and image system, and turning off all GG huds.
There is a post about this somewhere on the forums.
I can mess with this more after work.
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 2400 Mhz, 4 Core(s), 4 Logical Processor(s), 8gb RAM, Nvidia gtx660, Windows 7 Pro 64bit, Screen resolution 1680 x 1050.