Examine source code of Fields Alive with Color

{
  "theme": {
    "images": {
      "theme_frame": "ColorsAliveHcopy.jpg"
    },
    "colors": {
      "frame": "#5e5b5b",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Fields Alive with Color",
  "manifest_version": 2,
  "description": "sky, daybreak, sunset, mountains, fields, trees, lake, river, color, bright, nature, light"
}