Team green nursery!

Amy • Married since May, 2015 but with my soulmate since 2007. Gavin, was born at 36+2 on 6/21/16 is now big brother to Ryan born at 40+5 on 7/20/18!!
I need some input!  I'm struggling to come up with ideas for a gender neutral nursery since we're keeping the sex a surprise.  Hubby and I would like to keep the main stuff neutral and then be able to add to pop of color once the baby's born to make it more for a girl or boy.   Any suggestions/ideas welcome!  (Pictures are a bonus!).   FYI we have espresso furniture.