Examine source code of Easy Black

{
  "manifest_version": 2,
  "version": "1.2",
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "author": "__MSG_extensionAuthor__",
  "default_locale": "en",
  "theme": {
    "colors": {
      "toolbar": "rgb(16, 16, 16)",
      "toolbar_text": "rgb(160, 160, 160)",
      "toolbar_field_text": "rgb(190, 190, 190)",
      "toolbar_field_border_focus": "rgb(0, 0, 0)",
      "toolbar_field_border": "rgb(8, 8, 8)",
      "toolbar_field": "rgb(8, 8, 8)",
      "toolbar_field_focus": "rgb(8, 8, 8)",
      "toolbar_field_highlight_text": "rgb(8, 8, 8)",
      "toolbar_field_highlight": "rgb(200, 200, 200)",
      "toolbar_field_text_focus": "rgb(190, 190, 190)",
      "toolbar_top_separator": "rgb(16, 16, 16)",
      "toolbar_vertical_separator": "rgb(16, 16, 16)",
      "toolbar_bottom_separator": "rgb(16, 16, 16)",
      "frame": "rgb(16, 16, 16)",
      "frame_inactive": "rgb(16, 16, 16)",
      "popup": "rgb(8, 8, 8)",
      "popup_text": "rgb(160, 160, 160)",
      "popup_border": "rgba(30, 30, 30, 0.9)",
      "popup_vertical_separator": "rgb(16, 16, 16)",
      "popup_highlight_text": "rgb(190, 190, 190)",
      "popup_highlight": "rgb(15, 15, 15)",
      "button_background_active": "rgb(0, 0, 0)",
      "button_background_hover": "rgb(30, 30, 30)",
      "icons_attention": "rgb(218,165,32)",
      "icons": "rgb(160, 160, 160)",
      "sidebar_highlight_text": "rgb(190, 190, 190)",
      "sidebar_highlight": "rgb(16, 16, 16)",
      "sidebar_text": "rgb(160, 160, 160)",
      "sidebar": "rgb(16, 16, 16)",
      "sidebar_border": "rgb(16, 16, 16)",
      "tab_selected": "rgb(40, 40, 40)",
      "tab_text": "rgb(180, 180, 180)",
      "tab_loading": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(130, 130, 130)",
      "tab_line": "rgba(50, 50, 50, 0.9)",
      "ntp_background": "rgb(0, 0, 0)",
      "ntp_text": "rgb(190, 190, 190)",
      "bookmark_text": "rgb(160, 160, 160)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{93f7a73b-7abf-44c9-80ac-f1f4c932218f}"
    }
  }
}