Examine source code of GRID 2

{
  "name": "GRID 2",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "grid-4.png"
    },
    "colors": {
      "frame": "rgba(224, 126, 170, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(156, 158, 186, 1)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(207, 155, 155, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5aa7bca5-d047-4c62-a1d9-e2dec3c8b0b3}"
    }
  }
}