Examine source code of Poki

{
  "name": "Poki",
  "manifest_version": 2,
  "version": "6.0",
  "theme": {
    "images": {
      "theme_frame": "poki.png"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 0)",
      "tab_background_text": "rgba(61, 61, 61, 0.73)",
      "toolbar": "rgba(255, 255, 255, 0.21)",
      "bookmark_text": "rgba(61, 61, 61, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.65)",
      "toolbar_field_text": "rgba(61, 61, 61, 0.73)"
    }
  }
}