Blue and Green Tartans

[M. A. C. Newsome]

Black lines, only, are employed in the Black Watch tartan.

Just to clarify this statement to avoid confusion, I trust what the author meant, in discussing military tartans (which have a common blue/black/green structure), is that the Black Watch tartan contains only black stripes upon this background, whereas other military tartans will have other color stripes (red, white, yellow, etc.)

NOT that only the Black Watch has black stripes. :-)