Examine source code of leah

{
  "name": "leah",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "76dc05a49c64a41a7862413f038a603e.gif"
    },
    "colors": {
      "frame": "rgba(166, 70, 129, 1)",
      "tab_background_text": "rgba(237, 151, 204, 1)",
      "toolbar": "rgba(166, 138, 168, 0.5)",
      "bookmark_text": "rgba(212, 118, 222, 1)",
      "toolbar_field": "rgba(232, 86, 151, 1)",
      "toolbar_field_text": "rgba(235, 153, 199, 1)",
      "tab_line": "rgba(240, 178, 238, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{45169298-fcf0-48dc-9bda-24c67d4e4b77}"
    }
  }
}