Examine source code of FF-clair

{
  "name": "FF-light",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "FFheader.png"
    },
    "colors": {
      "frame": "rgba(232, 233, 235, 0)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(250, 250, 250, 0.5)",
      "tab_line": "rgba(100, 138, 158, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2c6ad338-7f56-4cc0-9823-9bfa321e2d94}"
    }
  }
}