Examine source code of Black Magic

{
  "manifest_version": 2,
  "version": "1.1resigned1",
  "name": "Black Magic",
  "theme": {
    "colors": {
      "frame": "#202124",
      "tab_background_text": "#eeeeee",
      "tab_text": "#eeeeee",
      "tab_loading": "#bdc1c6",
      "tab_line": "#eeeeee",
      "tab_selected": "#323639",
      "tab_background_separator": "#878a8e",
      "toolbar_field": "#282c2f",
      "toolbar_field_text": "#e8eaed",
      "toolbar_field_border": "#323639",
      "toolbar_bottom_separator": "#282828",
      "toolbar_field_border_focus": "#385584",
      "toolbar_field_separator": "#878a8e",
      "toolbar": "#323639",
      "toolbar_field_text_focus": "#eeeeee",
      "ntp_background": "#202124",
      "ntp_text": "#eeeeee",
      "popup": "#202124",
      "popup_text": "#eeeeee",
      "popup_border": "#323639",
      "popup_highlight": "#474b4e",
      "popup_highlight_text": "#f1e8ca",
      "icon": "#bdc1c6",
      "icons_attention": "#8ab4f8",
      "button_background_hover": "#424649",
      "button_background_active": "#424649",
      "sidebar_border": "#878a8e",
      "sidebar": "#323639",
      "sidebar_highlight": "#282c2f",
      "sidebar_highlight_text": "#f1e8ca",
      "sidebar_text": "#eeeeee"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{dcfe3620-6607-401d-a752-97d6e670ced2}"
    }
  }
}