Examine source code of Rising Gods First

{
  "theme": {
    "images": {
      "theme_frame": "firefoxpersona_rg003.jpg"
    },
    "colors": {
      "frame": "#213134",
      "tab_background_text": "#213134"
    }
  },
  "version": "2.0",
  "name": "Rising Gods First",
  "manifest_version": 2,
  "description": "Rising Gods' first persona\nLogo by Sma"
}