Examine source code of Lost in Imagination

{
  "name": "Lost in Imagination",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Lost in Imagination.png"
    },
    "colors": {
      "frame": "rgba(84, 194, 185, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(85, 196, 190, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(85, 196, 190, 0)",
      "toolbar_field_text": "rgba(189, 66, 214, 1)",
      "tab_line": "rgba(189, 66, 214, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6d988fc0-7c9a-432d-a622-3956fbabe84b}"
    }
  }
}