Examine source code of Night LLights

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "night light",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg",
        "images/1.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top",
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_text": "rgb(240, 139, 208)",
      "frame": "rgb(142, 167, 201)",
      "tab_background_text": "rgb(120, 244, 236)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(13, 119, 202)",
      "tab_line": "rgb(147, 31, 168)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(10, 215, 128)",
      "icons_attention": "rgb(30, 209, 227)",
      "icons": "rgb(42, 192, 223)",
      "ntp_background": "rgb(0, 0, 0)",
      "tab_loading": "rgb(147, 31, 168)"
    }
  }
}