Examine source code of Dark Theme [ Main Black ]

{
  "name": "Dark Reader Theme",
  "author": "Stylefox",
  "manifest_version": 2,
  "version": "1.2",
  "theme": {
    "colors": {
      "frame": "rgba(29, 32, 33, 1)",
      "frame_inactive": "rgba(34, 37, 38, 1)",
      "tab_background_text": "rgba(233, 233, 233, 1)",
      "tab_background_separator": "rgba(78, 85, 89, 1)",
      "tab_text": "rgba(233, 233, 233, 1)",
      "tab_line": "rgba(78, 85, 89, 1)",
      "tab_loading": "rgba(78, 85, 89, 1)",
      "tab_selected": "rgba(24, 26, 27, 1)",
      "icons": "rgba(233, 233, 233, 1)",
      "icons_attention": "rgba(166, 166, 166, 1)",
      "toolbar": "rgba(24, 26, 27, 1)",
      "bookmark_text": "rgba(233, 233, 233, 1)",
      "toolbar_top_separator": "rgba(24, 26, 27, 1)",
      "toolbar_bottom_separator": "rgba(29, 32, 33, 1)",
      "toolbar_vertical_separator": "rgba(24, 26, 27, 1)",
      "toolbar_field": "rgba(29, 32, 33, 1)",
      "toolbar_field_text": "rgba(233, 233, 233, 1)",
      "toolbar_field_text_focus": "rgba(255, 255, 255, 1)",
      "toolbar_field_highlight": "rgba(52, 56, 59, 1)",
      "toolbar_field_highlight_text": "rgba(255, 255, 255, 1)",
      "toolbar_field_focus": "rgba(29, 32, 33, 1)",
      "toolbar_field_border": "rgba(29, 32, 33, 1)",
      "toolbar_field_separator": "rgba(29, 32, 33, 1)",
      "toolbar_field_border_focus": "rgba(78, 85, 89, 1)",
      "button_background_hover": "rgba(52, 56, 59, 1)",
      "button_background_active": "rgba(78, 85, 89, 1)",
      "popup": "rgba(29, 32, 33, 1)",
      "popup_text": "rgba(233, 233, 233, 1)",
      "popup_border": "rgba(29, 32, 33, 1)",
      "popup_highlight": "#34383b",
      "popup_highlight_text": "rgba(255, 255, 255, 1)",
      "ntp_background": "rgba(24, 26, 27, 1)",
      "ntp_text": "rgba(233, 233, 233, 1)",
      "sidebar": "rgba(29, 32, 33, 1)",
      "sidebar_border": "rgba(29, 32, 33, 1)",
      "sidebar_text": "rgba(233, 233, 233, 1)",
      "sidebar_highlight": "#34383b",
      "sidebar_highlight_text": "rgba(255, 255, 255, 1)"
    }
  }
}