Yeah, I know the black lines are a bit of an eye-sore, but I tried to use dark-red and it made scoring the folds and trimming parts a lot harder. Still, other than edges of wings and such, the worst place it really sticks out is blocks just to either side of the gray. Only other option would be to find some kind of closely-matching enamal paint (glossy finger-nail paint maybe?) to touch over some of the more obvious and annoying black lines.
Maybe what I'll do is once the model is done I'll see if I can do a second layer on top with the parts having dark-red lines (instead of black) and the parts just ever so slightly bigger (to provide a smoother look). Not really sure if I'll do that, cause to keep the images sharp I have to use BMP (rather than jpg) and sticking in that kind of detailing will make the file-sizes ten-times larger.
The colors are just a flat one-tone color right now. As I said, details like varying shades/tints to suggest a paneled armor-tile with rivets effect (like your lovely 3d pics have) would boost the BMP size to a rediculous level.
This essentially leaves the tail-fin and twin-engine area, and the bulk for the intakes on the underside. I'm hoping it doesn't take me another week, especially since it's not quite the fancy curvature that the nose/cockpit has.