Examine source code of QU4RTZ

{
  "name": "bar1",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "bar1.png"
    },
    "colors": {
      "frame": "rgba(173, 255, 145, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field_text": "rgba(217, 43, 176, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{04878ebb-e2d3-487f-8901-8d18b34a6594}"
    }
  }
}