The Truth About My Rattlesnake Beans

I was so excited when I peeked into my tee pee bean poles and saw that my rattlesnake pole beans had finally come.  We didn't have much luck last year due to our compost still being too active for almost everything in our garden.  Taylor harvested them the other day and steamed them up for dinner.  They were the most delicious beans I've had this summer, sweet, wonderful texture, but something surprised me;  when the beans were steamed, the beautiful purple striations on the beans dissipated and my rattlesnakes beans became green beans.  Not a big deal at all, just surprised.