I have some yarn set aside for diced hose to match the Edzell tartan Rocky had made up. With a little luck, it will go with the Xmarks, too. This is with 2 shades of blue, and the marled combination just happened to be available---all in worsted weight yarn. So it would be blue and blue rather than blue and white.

If it doesn't work out, we'll just have to get cracking on some Xmarks tartan hose! but first I have some kilts to sew...