Examine source code of pedras coloridas

{
  "name": "pedras coloridas",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "pedras coloridas.png"
    },
    "colors": {
      "frame": "rgba(56, 28, 37, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(7, 5, 51, 0.57)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(9, 5, 54, 0.15)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{67973d8b-136d-4158-be53-f1432e44600d}"
    }
  }
}