I've found this light purple with a few blue and whitish elements pretty nice. Menus are alien green but it makes them really easy to read even though the people look a bit funny. Radar works fine though.
I keep trying for a more interesting hud but coming back to this one, it feels so clear to my eyes in VR
<MatrixRed> 0.45, 0, 0.35 </MatrixRed>
<MatrixGreen> -1.99, 1.5, 0 </MatrixGreen>
<MatrixBlue> 0, -0.3, 1.5 </MatrixBlue>
That said here is a blue that I found somewhat tolerable.
<MatrixRed> 0, 0.5, 1 </MatrixRed>
<MatrixGreen> 0, 0.5, 0 </MatrixGreen>
<MatrixBlue> 1, 0, 0 </MatrixBlue>
Although I went back to the purple
Links
Purple. purples are a little more vibrant in game, and greens are a little more alien greenish.
http://arkku.com/elite/hud_editor/#theme_0.45_0_0.35_-1.99_1.5_0_0_-0.3_1.5
blue. blues look a little less vibrant than this in game.
http://arkku.com/elite/hud_editor/#theme_0_0.5_1_0_0.5_0_1_0_0
edit: looks like the other blue posted is pretty close to this one. but yeah