This doesn't directly follow from the preceding posts, but the topic is in the general ballpark, so here goes.
Last night I was reading through the scan (found here at DCM) of Black Diamond Western #36, whose 2nd story is "Mystery of the Murder Mine" with art by Dick Rockwell. I had the art onscreen at pretty much full resolution and it was really driven home to me (Once again) how quite good art was undercut by bad color registration and bad printing. I mean, look at pgs. 3 or 7 of that story, mentally strip out the color and fill in the under-inked blacks. Really tasty art IMHO, but totally undercut by the printers. I'm tempted to take a page into Photoshop and filter out the color and see if I can produce an approximation of the original B&W art. Perhaps I'll do that when I've got some spare time, but I just wanted to point out that Rockwell, (who is totally unsung, as far as I know), did some nifty work.