Examine source code of Redsillo

{
  "theme": {
    "images": {
      "theme_frame": "firefoxheader.jpeg"
    },
    "colors": {
      "frame": "#fcfcfc",
      "tab_background_text": "#fcfcfc"
    }
  },
  "version": "2.0",
  "name": "Redsillo",
  "manifest_version": 2,
  "description": "Again -=) combine this with the mozilla firefox theme Nasa Night launch, try it"
}