Examine source code of Crocodile eyes

{
  "name": "Crocodile eyes",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "crocodile-5182571_1920.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{44d74a48-23e8-46d0-af03-7f7a41a9d80a}"
    }
  }
}