Examine source code of darker planet

{
  "name": "dark planet",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "wqZfyM.jpg"
    },
    "colors": {
      "frame": "rgba(234, 237, 242, 1)",
      "tab_background_text": "rgba(245, 245, 245, 1)",
      "toolbar": "rgba(245, 14, 14, 0)",
      "bookmark_text": "rgba(247, 247, 247, 1)",
      "toolbar_field": "rgba(234, 237, 242, 0.32)",
      "toolbar_field_text": "rgba(240, 235, 235, 1)"
    }
  }
}