Examine source code of Eva Dark

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Eva Dark",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(40, 44, 52)",
      "toolbar_text": "rgb(197, 197, 197)",
      "frame": "rgb(33, 37, 43)",
      "tab_background_text": "rgb(121, 127, 162)",
      "toolbar_field": "rgb(40, 44, 52)",
      "toolbar_field_text": "rgb(157, 165, 179)",
      "tab_line": "rgba(89, 141, 239, 0.4)",
      "popup": "rgb(33, 37, 43)",
      "popup_text": "rgb(215, 218, 224)",
      "button_background_active": "rgba(103, 110, 149, 0.6)",
      "button_background_hover": "rgba(89, 141, 239, 0.9)",
      "icons": "rgb(197, 197, 197)",
      "ntp_background": "rgb(40, 44, 52)",
      "popup_border": "rgb(33, 37, 43)",
      "popup_highlight": "rgba(89, 141, 239, 0.25)",
      "sidebar_border": "rgb(40, 44, 52)",
      "sidebar_text": "rgb(215, 218, 224)",
      "sidebar": "rgb(40, 44, 52)",
      "tab_loading": "rgb(66, 131, 245)",
      "tab_selected": "rgb(40, 44, 52)",
      "tab_text": "rgb(215, 218, 224)",
      "toolbar_bottom_separator": "rgb(40, 44, 52)",
      "toolbar_top_separator": "rgb(40, 44, 52)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2b289d4f-b5d1-43b0-b23f-d6c35b40d35a}"
    }
  }
}