Are AG pumpkins supposed to grow yellow? I had a lot of rain the other day from the hurricane remnants in SE PA , so I figured it was going to abort the yellow pumpkins from too much water, but to my surprise the pumpkin apparently got pollinated and has since grown to almost softball size(12 in circumfrence). Now all of the pumpkins on the plants are yellow? Are these really supposed to be yellow like this? Thanks.