Examine source code of Group dolphins

{
  "name": "delfini",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "delfini.jpg"
    },
    "colors": {
      "frame": "rgba(1, 20, 14, 1)",
      "tab_background_text": "rgba(137, 250, 220, 1)",
      "toolbar": "rgba(204, 204, 204, 0.17)",
      "bookmark_text": "rgba(137, 250, 220, 1)",
      "toolbar_field": "rgba(25, 59, 51, 0.21)",
      "toolbar_field_text": "rgba(137, 250, 220, 1)"
    }
  }
}