Its been awhile since I made this, but just looking at the pics, it looks like I just used regular angled slopes with the different color combos That thin stripe is on a flat surface.

How did you get the orange line to thin out in the center there? I'm repainting my ships that I've been making with your ship segment pack Dark Trinium and Gray because I think that scheme looks really nice on them, but I've been unable to figure out how to replicate that thinner stripe on this particular module. Skill issue, I know.