Examine source code of Minecraft Bee

{
  "name": "Minecraft Bee",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "80px-Bee_types.png"
    },
    "colors": {
      "frame": "rgba(222, 206, 84, 1)",
      "tab_background_text": "rgba(77, 57, 34, 1)",
      "toolbar": "rgba(255, 255, 148, 1)",
      "bookmark_text": "rgba(77, 57, 34, 1)",
      "toolbar_field": "rgba(229, 235, 108, 1)",
      "toolbar_field_text": "rgba(77, 57, 34, 1)"
    }
  }
}