I'm tryingLet me know if you come up with a good colour, or need help getting a particular colour
mul r3.xyzw, r1.xyzw, l(1.000000, 0.200000, 0.000000, 0.400000)
Which (on my setup and eyes at least) makes it appear to be nearer the original color, but I can see from flipping back and forth between the stock colors and the mod colors that it is actually the changing of the background of the radar disc that alters the balance between the orange neutral ships and the white objects and makes them more difficult to tell apart for some reason. This color allows me to more easily tell the difference in testing, so I will see how it goes while playing. I didn't change the coasters or sticks since they still look OK with the adjusted color.
I didn't want to change the color to a completely different one because it could conflict with one of the colors used when in a wing - I think I've seen blue, pink and purple when in a wing, and there aren't many other colors left!