I believe the 'traditional" GFG may have yellow centers and green paths, but it is "NOT" a rule! I have used yellow centers for mine, with the 3rd row white. I did put together with green, but not in the traditional layour. There are so many ways to do this quilt. Look up some sites, and find what you like.
http://hexagonquilt-along.blogspot.com/ is a good site with lots of fun stuff to look into. Have fun with your hexies. They are addicting!! I did applique the top to borders, then appliqued the borders. Not traditional :oops: