Examine source code of Blue Rune I

{
  "theme": {
    "images": {
      "theme_frame": "rune1_top.png"
    },
    "colors": {
      "frame": "#a6f8ff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Blue Rune I",
  "manifest_version": 2,
  "description": "For those who like the color blue..."
}