Examine source code of Block Community -Updated

{
  "theme": {
    "images": {
      "theme_frame": "Firefox_BCBLOCKS2.png"
    },
    "colors": {
      "frame": "#043e7d",
      "tab_background_text": "#bababa"
    }
  },
  "version": "2.0",
  "name": "Block Community -Updated",
  "manifest_version": 2,
  "description": ":3"
}