Examine source code of Bluebonnets

{
  "theme": {
    "images": {
      "theme_frame": "Bluebonnets-Header.jpg"
    },
    "colors": {
      "frame": "#60bf13",
      "tab_background_text": "#f9f9fc"
    }
  },
  "version": "2.0",
  "name": "Bluebonnets",
  "manifest_version": 2,
  "description": "Bluebonnet Festival in Chappell Hill, Texas."
}