Examine source code of Haunter Bones

{
  "name": "Haunter Bones",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "d5qczcu-e7f969b7-00ff-4e63-aacc-af2b87794426.png"
    },
    "colors": {
      "frame": "rgba(119, 71, 186, 0.8)",
      "tab_background_text": "rgba(252, 252, 252, 1)",
      "toolbar": "rgba(79, 76, 105, 1)",
      "toolbar_field": "rgba(190, 185, 201, 1)"
    }
  }
}