Examine source code of Abstract Wallpaper

{
  "name": "1000050493",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "1000050493.jpg"
    },
    "colors": {
      "frame": "rgba(184, 33, 33, 1)",
      "tab_background_text": "rgba(61, 55, 55, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_field": "rgba(0, 0, 0, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2d0f4091-8cb2-4219-ac7f-ddf56baa7ff4}"
    }
  }
}