Examine source code of Black White - Transparent

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "black-white-transparent",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(0, 0, 0, 0)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgb(108, 0, 255)",
      "button_background_hover": "rgba(0, 0, 0, 0.24)",
      "ntp_background": "rgb(0, 0, 0)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_highlight_text": "rgb(255, 255, 255)",
      "popup_highlight": "rgb(108, 0, 255)",
      "sidebar_highlight": "rgb(108, 0, 255)",
      "tab_selected": "rgba(255, 255, 255, 0)",
      "toolbar_bottom_separator": "rgba(255, 255, 255, 0)",
      "toolbar_field_border_focus": "rgba(111, 0, 255, 0.15)",
      "toolbar_field_border": "rgba(0, 0, 0, 0)",
      "toolbar_field_highlight": "rgb(108, 0, 255)",
      "toolbar_top_separator": "rgba(255, 255, 255, 0)",
      "tab_loading": "rgba(0, 0, 0, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7b91a7b6-586d-4d76-8fe0-f287fcfa08a7}"
    }
  }
}