Examine source code of darkness inside

{
  "name": "darkness inside",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "water-glass-7a-600x322.jpg"
    },
    "colors": {
      "frame": "rgba(5, 5, 5, 1)",
      "tab_background_text": "rgba(245, 3, 3, 1)",
      "toolbar": "rgba(5, 5, 5, 1)",
      "bookmark_text": "rgba(232, 14, 14, 1)",
      "toolbar_field": "rgba(15, 14, 14, 1)",
      "toolbar_field_text": "rgba(245, 240, 240, 1)"
    }
  }
}