Examine source code of Skellington Face

{
  "name": "Skellington Face",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "Skell on Gradient.jpg"
    },
    "colors": {
      "toolbar": "rgba(245, 233, 233, 0.05)",
      "toolbar_field": "rgba(240, 247, 237, 0)",
      "toolbar_field_text": "rgba(240, 17, 17, 0.89)",
      "frame": "rgba(103, 135, 103, 0.86)",
      "tab_background_text": "rgba(34, 227, 0, 0.88)",
      "bookmark_text": "rgba(240, 34, 34, 0.94)"
    }
  }
}