Examine source code of Angry Black Cat

{
  "name": "Angry Black  Cat",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(72, 36, 79, 1)",
      "tab_background_text": "rgba(255, 255, 3, 1)",
      "toolbar": "rgba(72, 36, 79, 0)",
      "bookmark_text": "rgba(255, 255, 8, 1)",
      "toolbar_field": "rgba(72, 36, 79, 0.08)",
      "toolbar_field_text": "rgba(255, 255, 15, 1)",
      "tab_line": "rgba(255, 255, 15, 1)"
    }
  }
}