A picture showing what color green they are would be helpful. Could the variety be 'Early Sweet Sugar Pie'. In general once a C. pepo (like your variety of pumpkin) starts to change from dark green to orange, it can be harvested and it will continue to ripen off the vine. It would be best if the pumpkin could ripen on the vine, but that doesn't appear to be an option for you. When the pumpkin is growing it will be a pale green then it will turn a very dark green once it reaches its mature size. It will not get any larger once it reaches this point. Then it will begin to turn orange. A deep green pumpkin might be able to turn orange but it is best to wait until you start seeing some yellow/orange color on the pumpkin.

The baseball size ones that are still getting larger will not ripen off the vine. You can eat a green pumpkin, just treat it like a summer squash. A immature pumpkin will not store long (much like a summer squash).

Thank you. I would have thought to treat them like winter, not summer squash. I like fried squash!

Is your vine completely dead? If so I would definitely pick them. I have had mine ripen from green to orange off the vine. Last year I even had some smaller green ones ripen for me after I picked them. Once you pick them I believe they ripen pretty quickly.