DENVER (AP) — A few raindrops fell as Heather Grady gingerly transplanted beet seedlings into the earth, but the sky refused to release enough moisture to ease her worries about a dry winter that’s left reservoirs low. With most of Colorado in drought, Grady and her husband Terrance began discussing how they could conserve more water in their backyard vegetable garden. “We feel personally responsible, even though it’s not a problem we created,” said Grady, who has committed to cutting back on