Examine source code of insomnia_noct

{
  "name": "insomnia_noct",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "insomnia_noct.jpg"
    },
    "colors": {
      "frame": "rgba(112, 127, 214, 1)",
      "tab_background_text": "rgba(222, 222, 222, 1)",
      "toolbar": "rgba(255, 255, 255, 0)",
      "bookmark_text": "rgba(222, 222, 222, 1)",
      "toolbar_field": "rgba(70, 85, 107, 0.69)",
      "toolbar_field_text": "rgba(202, 212, 235, 1)"
    }
  }
}