Could you make the HUD's (especially the logos for your ship's components and the frame around spotted enemy ships) as well as the crosshair's color adjustable? That standard white seems like a really bad choice (bright skies, white clouds, ...) at times, as it's often barely visible. I'd much rather have those in bright green, which has the unique quality of seeming dark in front of bright backgrounds, as well as bright in front of dark backgrounds.
A simple set of Red/Yellow/Blue-sliders to adjust HUD and crosshair colors (individually would be preferred) in the options menu would be a massive improvement imho.