Hi Michael,

This is looking great so far!

I noticed that there was one "group" in Illustrator, which included the bitmap and a clip for the exterior of it.
I can also see where your thicker lines reside lower in order than the bitmap, and the thinner are above, but they all reside on the same Illustrator layer.

Could you consider putting the different separate 'layers' of line types within actual groups, if it will let you do that?

Then we could just click on the group of lines and colorize it or whatever if need be.