Examine source code of REDhellokitty

{
  "name": "REDhellokitty",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "trans kitty.png"
    },
    "colors": {
      "frame": "rgba(251, 216, 183, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(222, 67, 62, 1)",
      "toolbar_field_text": "rgba(168, 64, 64, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f0e533c4-e57d-4daa-b86c-cf6588ab2842}"
    }
  }
}