Mystery Shirts Revealed! Also, FOR SALE!

What was that amazing Double Fine t-shirt the team was wearing all throughout our live stream the other week? With the simple 2hb logo in bright green on a black shirt, or orange on a gray shirt? What was it and how can I buy one immediately? Are these questions you or someone you love has asked?
I hope you did, because the answer is AWESOME:

If you are reading this part then you went too far. The awesome answer was above.