Kacey Musgraves is a radical optimist on the blissed-out ‘Golden Hour’

The promise of new love meets the thrill of new sounds on “Golden Hour,” Kacey Musgraves’ knockout of a third studio album.

“Kiss full of color makes me wonder where you’ve always been,” the 29-year-old country star sings in “Butterflies,” before adding, “I was hiding in doubt till you brought…