Examine source code of Chaves

{
  "theme": {
    "images": {
      "theme_frame": "ChavesHead.jpg"
    },
    "colors": {
      "frame": "#ebe6e6",
      "tab_background_text": "#f7c266"
    }
  },
  "version": "2.0",
  "name": "Chaves",
  "manifest_version": 2,
  "description": "Chaves, Portugal a town has always had great historical importance, being the site of an important Roman garrison and later being in the forefront of resistance during the Napoleonic invasions of the early nineteenth century."
}