Examine source code of Simple

{
  "name": "Simple",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "jp waves.jpg"
    },
    "colors": {
      "frame": "rgba(199, 217, 255, 1)",
      "tab_background_text": "rgba(15, 15, 15, 1)",
      "toolbar": "rgba(46, 46, 46, 1)",
      "bookmark_text": "rgba(191, 206, 245, 1)",
      "toolbar_field": "rgba(122, 122, 122, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)"
    }
  }
}