Green striped spaqhetti squash??

[Miss Maia]

Hello! I'm hoping some fellow gardeners can help me with something. I'm growing spaghetti squash this year (seeds purchased at a local nursery) and one of my plants is producing green, not quite striped and not quite spotted fruits -- I would say the coloring of a watermelon, but with the shape of a spaghetti squash. Has anyone else had this happen? Did the seed package contain a bizarre hybrid seed by mistake? Any insight would be greatly appreciated.