Examine source code of Navy Slate (Chrome)

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Slate",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(33, 51, 88)",
      "toolbar_text": "rgb(204, 204, 204)",
      "frame": "rgb(14, 24, 48)",
      "tab_background_text": "rgb(222, 222, 222)",
      "toolbar_field": "rgba(224, 226, 227, 0.81)",
      "toolbar_field_text": "rgb(15, 15, 15)",
      "tab_line": "rgb(33, 51, 88)",
      "popup": "rgb(7, 50, 84)",
      "popup_text": "rgb(199, 199, 199)",
      "tab_loading": "rgb(33, 51, 88)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5c19f35f-4813-4796-86ba-615a3d93da87}"
    }
  }
}