Examine source code of supernat

{
  "name": "supernat",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "5.png"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 0)",
      "tab_background_text": "rgba(255, 255, 255, 0.54)",
      "toolbar": "rgba(255, 250, 250, 0)",
      "bookmark_text": "rgba(255, 255, 255, 0.5)",
      "toolbar_field": "rgba(255, 255, 255, 0.11)",
      "toolbar_field_text": "rgba(64, 56, 56, 0.77)"
    }
  }
}