Examine source code of sweetcoffee

{
  "name": "light brown",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Empty.png"
    },
    "colors": {
      "frame": "rgba(207, 199, 174, 1)",
      "tab_background_text": "rgba(140, 135, 115, 1)",
      "toolbar": "rgba(244, 236, 216, 1)",
      "bookmark_text": "rgba(140, 135, 115, 1)",
      "toolbar_field": "rgba(207, 199, 174, 1)",
      "toolbar_field_text": "rgba(140, 135, 115, 1)",
      "tab_line": "rgba(140, 135, 115, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0ed3fccd-fae3-41bd-8471-29c5c3e466a7}"
    }
  }
}