Examine source code of WJSN

{
  "name": "WJSN",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "wjsn.jpg"
    },
    "colors": {
      "frame": "rgba(166, 186, 230, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(144, 208, 214, 0)",
      "bookmark_text": "rgba(26, 20, 20, 1)",
      "toolbar_field": "rgba(151, 166, 219, 0.04)",
      "toolbar_field_text": "rgba(20, 17, 17, 1)"
    }
  }
}