Wanted to say congrats on the babies!
Our nursery is pretty gender neutral (yellow, farm theme) and I have a few pics in bio.
Also, I saw a set that I love (wish I had a reason for it) at Babies R Us yesterday. I think it's definitley neutral; but modern. Here's the link: https://www.toysrus.com/product/index.jsp?productId=2908525
I think it was MrsLee on the Multiples board who used a Hawaiian/tropical theme in her nursery with palm trees surf boards, etc. I think she found the bedding at PBK. I thought it was a great idea for a b/g room, so it could easily work for 2 girls and 1 boy too.
Congrats on the triplets! I hope you have a happy & healthy pregnancy!