Answer: Some newer varieties of pumpkins have a gene that colors the immature pumpkin yellow, so you never see the green stage. However, these usually turn from light yellow to orange upon maturity. If the variety you grew didn't turn bright orange, try another old fashioned variety next year such as 'Howden' or 'Connecticut Field'. These will start the traditional green and mature to orange. The color of pumpkins is all based on genetics, so anything you do culturally to the plant shouldn't affect the color.
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