Examine source code of Totally Tribal

{
  "theme": {
    "images": {
      "theme_frame": "tribalheader.png"
    },
    "colors": {
      "frame": "#cb824d",
      "tab_background_text": "#ff9054"
    }
  },
  "version": "2.0",
  "name": "Totally Tribal",
  "manifest_version": 2,
  "description": "I wanted a tribal theme that matched a cool wallpaper I found on deviantART. Nothing ended up being quite what I wanted, so I decided to just make one instead!"
}