Ah, ok...the bubble dividers and frame are all one piece. It would be possible to separate the two and specify some custom images to use, but the easiest route is just to colorize the current frame to suit your tastes.
It's found in the bottom left corner of "mugshots_female.dds" in the /EverQuest II/UI/Default/images folder.
I just dropped the saturation on the frame in the attached version...let me know if that works for you. Just save this to your /EverQuest II/UI/<custom ui folder>/images directory.
(To change the gold text to grey as well, replace all instances of "#EAC267" in the XML file with "#A9A9A9".)