Examine source code of Blackstrider tripod

{
  "theme": {
    "images": {
      "theme_frame": "up.jpg"
    },
    "colors": {
      "frame": "#ed9821",
      "tab_background_text": "#9c9494"
    }
  },
  "version": "2.0",
  "name": "Blackstrider tripod",
  "manifest_version": 2,
  "description": "Ah, my artwork featuring something between the War of the worlds tripod and the strider from Half-life 2"
}