The green is done in a simple running stitch and also closely matches the fabric.
With this I definitely understand having the perfect thread color. For these they work well, because they are on a man's bandanna and shouldn't stand out too much. Although I think in the future I will be working with some color wheel opposites. :)
I loved working on these and miss embroidery, but I have some plans for 2011 to do some more embroidery.