Examine source code of Mountains, Snow, Nature

{
  "name": "Mountains, Snow, Nature",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Mountains, Snow, Nature.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(12, 223, 230, 1)",
      "toolbar_field": "rgba(235, 164, 164, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{45b76ae4-f70b-494b-a33e-4280805b17c1}"
    }
  }
}