Holly Berry Socks
Although these aren't mostly green, they seem like a good Project Spectrum project with their flora color inspiration. I was a little worried that the Holly Berry colorway would strike me as too Christmas-y for year round wear, but I find I really like it. If the yarn was not long discontinued I would consider purchasing more. It makes a nice soft sock without too much pooling.
Supplier: Somerville Yarn Swap
Pattern: Two At Once Toe-Up Socks
Needles: US Size 1 / 2.5 mm
I didn't actually follow the above pattern specifically, but it is the same construction method. I did these two at once, toe up with a peasant heel. I know I did a different toe, because I did my weird provisional wedge toe-thing, but the concept is essentially the same.