Examine source code of Green Polar lights

{
  "name": "Polar lights",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "polarlichter gif.gif"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(16, 13, 36, 1)",
      "toolbar": "rgba(0, 0, 0, 1)",
      "bookmark_text": "rgba(93, 189, 158, 1)",
      "toolbar_field": "rgba(61, 51, 77, 1)",
      "toolbar_field_text": "rgba(107, 95, 130, 1)"
    }
  }
}