Examine source code of Cat Gecko

{
  "theme": {
    "images": {
      "theme_frame": "firefoxCatgecko1.PNG"
    },
    "colors": {
      "frame": "#4a4a4a",
      "tab_background_text": "#00cccc"
    }
  },
  "version": "2.0",
  "name": "Cat Gecko",
  "manifest_version": 2,
  "description": "This is a Cat Gecko. I did not take this photo. It was taken by Thor E HÃ¥konsen.\n\nTags: Reptile - Lizard - Gecko - Thor HÃ¥konsen - Cat"
}