Examine source code of Active Tab ! Light Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Active Tab !   Light Theme",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(249, 249, 251)",
      "toolbar_text": "rgb(58, 58, 58)",
      "frame": "rgb(34, 40, 49)",
      "tab_background_text": "rgb(178, 179, 179)",
      "toolbar_field": "rgb(249, 249, 251)",
      "toolbar_field_text": "rgb(66, 72, 81)",
      "tab_line": "rgb(249, 249, 251)",
      "popup": "rgb(240, 240, 242)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_active": "rgb(161, 161, 161)",
      "button_background_hover": "rgb(192, 192, 192)",
      "frame_inactive": "rgb(66, 72, 81)",
      "icons_attention": "rgb(66, 133, 244)",
      "icons": "rgb(66, 72, 81)",
      "ntp_background": "rgb(249, 249, 251)",
      "ntp_text": "rgb(33, 33, 33)",
      "popup_border": "rgb(211, 211, 211)",
      "popup_highlight_text": "rgb(105, 105, 105)",
      "popup_highlight": "rgb(239, 239, 242)",
      "sidebar_border": "rgb(192, 192, 192)",
      "sidebar_highlight_text": "rgb(21, 20, 26)",
      "sidebar_highlight": "rgb(66, 133, 244)",
      "sidebar_text": "rgb(21, 20, 26)",
      "sidebar": "rgb(248, 248, 255)",
      "tab_background_separator": "rgb(220, 220, 220)",
      "tab_loading": "rgb(58, 58, 58)",
      "tab_selected": "rgb(249, 249, 251)",
      "tab_text": "rgb(58, 58, 58)",
      "toolbar_bottom_separator": "rgb(218, 218, 218)",
      "toolbar_field_border_focus": "rgb(66, 133, 244)",
      "toolbar_field_border": "rgb(192, 192, 192)",
      "toolbar_field_focus": "rgb(255, 255, 255)",
      "toolbar_field_highlight_text": "rgb(240, 248, 255)",
      "toolbar_field_highlight": "rgb(0, 120, 215)",
      "toolbar_field_separator": "rgb(220, 220, 220)",
      "toolbar_field_text_focus": "rgb(31, 31, 31)",
      "toolbar_top_separator": "rgb(34, 40, 49)",
      "toolbar_vertical_separator": "rgb(218, 218, 218)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{44dac9d7-0dbb-4889-8512-9624a9d70e08}"
    }
  }
}