Examine source code of brown bar

{
  "theme": {
    "images": {
      "theme_frame": "barraverdeagua.png"
    },
    "colors": {
      "frame": "#b5883c",
      "tab_background_text": "#80ebed"
    }
  },
  "version": "2.0",
  "name": "brown bar",
  "manifest_version": 2,
  "description": "by Sebastián Rebolledo"
}