Three images from the Rockies’ much-needed 6-2 victory over the Houston Astros Tuesday night at frigid Coors Field: * In the top of the seventh inning, right-hander Jon Gray slapped his glove in celebration after inducing a double play to snuff out a would-be Houston rally. * In the sixth, C.J. Cron raised his arm in the air at second base after delivering the biggest hit of his fledgling Rockies career.