Examine source code of Zen Forest

{
  "name": "star",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "nihon-no-ashitaba.jpg"
    },
    "colors": {
      "frame": "rgba(245, 245, 245, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(15, 158, 82, 1)",
      "bookmark_text": "rgba(60, 201, 109, 1)",
      "toolbar_field": "rgba(60, 201, 109, 1)",
      "toolbar_field_text": "rgba(15, 158, 82, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{19c2723d-dc12-4dc2-ba7a-fbd1b1482683}"
    }
  }
}