Examine source code of Alternative Breath Dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Alternative Breath Dark",
  "theme": {
    "colors": {
      "frame": "#292f34",
      "tab_background_text": "#ffffff",
      "toolbar": "#292f34",
      "toolbar_text": "#ffffff",
      "toolbar_top_separator": "#54595d",
      "tab_line": "#1abc9c",
      "button_background_active": "#1abc9c",
      "button_background_hover": "#54595d",
      "icons": "#ffffff",
      "icons_attention": "#1abc9c",
      "ntp_background": "#292f34",
      "ntp_text": "#ffffff",
      "popup": "rgba(41, 47, 52, 0.97)",
      "popup_text": "#ffffff",
      "popup_highlight_text": "#ffffff",
      "sidebar": "#292f34",
      "sidebar_highlight": "#1abc9c",
      "sidebar_highlight_text": "#ffffff",
      "sidebar_text": "#ffffff",
      "sidebar_border": "#54595d",
      "tab_background_separator": "#54595d",
      "tab_loading": "#1abc9c",
      "toolbar_bottom_separator": "#54595d",
      "toolbar_field": "#292f34",
      "toolbar_field_text": "#ffffff",
      "toolbar_field_highlight": "#1abc9c",
      "toolbar_field_highlight_text": "#ffffff",
      "toolbar_field_border": "#54595d",
      "toolbar_field_border_focus": "#1abc9c",
      "toolbar_field_separator": "#54595d",
      "toolbar_vertical_separator": "#54595d"
    }
  }
}