Examine source code of digitalcuritiba

{
  "name": "digitalcuritiba",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "logo-colorida.png"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(255, 245, 245, 1)",
      "toolbar": "rgba(0, 0, 0, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(0, 250, 190, 1)",
      "toolbar_field_text": "rgba(13, 13, 13, 1)",
      "tab_line": "rgba(0, 250, 190, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c58afe1a-d5b5-47a3-99b1-002a13e225fd}"
    }
  }
}