Examine source code of Blue & Black robots

{
  "theme": {
    "images": {
      "theme_frame": "Semttuloshdfeugrtbg.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Blue & Black robots",
  "manifest_version": 2,
  "description": "this is a very appealing persona, combining 3 colors."
}