Examine source code of Tyrian Purple

{
  "name": "Tyrian Purple",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "black.png"
    },
    "colors": {
      "frame": "rgba(21, 21, 21, 1)",
      "tab_background_text": "rgba(187, 190, 188, 1)",
      "toolbar": "rgba(102, 2, 60, 1)",
      "bookmark_text": "rgba(187, 190, 188, 1)",
      "toolbar_field": "rgba(102, 2, 60, 1)",
      "toolbar_field_text": "rgba(187, 190, 188, 1)"
    }
  }
}