Monterey is a deep forest green with hints of grey, gold, and marine blue. It's named after the coastal California city and home of one of the great aquariums in the world, with a lush kelp forest as its centerpiece.
This yarn base, Union, is squishy and soft sport-weight yarn. I'd use it for quick socks, kid knits, or drapey/light knits for grown-ups. It's 100% superwash merino in a springy 4-ply; 350 yds, 95g. Hand wash and dry.