I do like the border as shown; the color and the scale of the print agree with the fabrics of the body of the quilt. If you'd like a bit more dramatic look you could trim this border by about half, more or less, and add a wider border of the dark green. I would not like the dark green instead of the print, however, as it would be nearly up against too many of the green blocks near the edge. I'm looking forward to seeing your final choices.