Examine source code of Grass Sky and Clouds

{
  "theme": {
    "images": {
      "theme_frame": "Grass-clouds-and-sky.jpg"
    },
    "colors": {
      "frame": "#b9e2eb",
      "tab_background_text": "#64a66a"
    }
  },
  "version": "2.0",
  "name": "Grass Sky and Clouds",
  "manifest_version": 2,
  "description": "A pale pastel nature theme that is designed to not interfere visually with text or menu bars that are transparent."
}