Examine source code of Nesting- birdie

{
  "theme": {
    "images": {
      "theme_frame": "AmyWtsn-Nesting1.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#5e4818"
    }
  },
  "version": "2.0",
  "name": "Nesting- birdie",
  "manifest_version": 2,
  "description": "Cute spring header to match my Nesting scrapbook kit at Nuthouse-Scraps dot com."
}