Examine source code of Red_fox_swirl

{
  "theme": {
    "images": {
      "theme_frame": "red_swirl.jpg"
    },
    "colors": {
      "frame": "#cf0b0b",
      "tab_background_text": "#fcf9f9"
    }
  },
  "version": "2.0",
  "name": "Red_fox_swirl",
  "manifest_version": 2,
  "description": "deep reds swirl with blue and red firefox"
}