Examine source code of librastee

{
  "name": "librastee",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "libratee 1400.png"
    },
    "colors": {
      "frame": "rgba(47, 85, 173, 1)",
      "tab_background_text": "rgba(184, 44, 44, 1)",
      "toolbar": "rgba(122, 102, 102, 1)",
      "bookmark_text": "rgba(74, 35, 35, 1)",
      "toolbar_field": "rgba(245, 63, 63, 1)",
      "toolbar_field_text": "rgba(158, 71, 71, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4199e4b7-aa2d-4a0e-827d-de467ceb1404}"
    }
  }
}