Examine source code of Killing Bites

{
  "name": "Killing Bites",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "image143.jpg"
    },
    "colors": {
      "frame": "rgba(245, 239, 237, 1)",
      "tab_background_text": "rgba(27, 242, 24, 1)",
      "toolbar": "rgba(250, 241, 237, 0)",
      "bookmark_text": "rgba(28, 240, 17, 1)",
      "toolbar_field": "rgba(250, 240, 240, 1)",
      "toolbar_field_text": "rgba(31, 245, 19, 1)",
      "tab_line": "rgba(57, 245, 19, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{472fc3f9-b14f-4ca0-bb46-4aa6774066a5}"
    }
  }
}