Haha, I know what you mean about "needing" a green bag, as my olive is going back. I find this Olive so "Non Olivey" --- she barely looks green at all, more gray-ish, in my eyes!
You're lucky that the 25 works for you because there are a few nice "25 only" colors, like yellow and pink, I forgot what else...
For an additional Green are you waiting to see the new inventory (all of it, not just a few runway pics). Or have you considered one of the Kelly Green Rogues -- I think one is a 36? It's all a blur now, with my constantly viewing this forever sale!