Examine source code of Sonic Sega Animated

{
  "name": "Sonic Sega Animated",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "sonic-V3-FINAL.png"
    },
    "colors": {
      "frame": "rgba(149, 224, 148, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(194, 193, 155, 1)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(232, 232, 232, 1)",
      "toolbar_field_text": "rgba(3, 3, 3, 1)",
      "tab_line": "rgba(0, 255, 251, 0.66)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6b92c205-6018-40f2-9543-dfd1cbda6f4c}"
    }
  }
}