Examine source code of BLACK BACKGROUND

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "BLACK BACKGROUND",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-022-596dadc947cc0c2cc2a2b476e7938bd3.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(24, 29, 47)",
      "toolbar_text": "rgb(165, 238, 180)",
      "frame": "rgb(78, 78, 139)",
      "tab_background_text": "rgb(165, 238, 180)",
      "toolbar_field": "rgb(78, 78, 139)",
      "toolbar_field_text": "rgb(165, 238, 180)",
      "tab_line": "rgb(165, 238, 180)",
      "popup": "rgb(111, 77, 104)",
      "popup_text": "rgb(165, 238, 180)",
      "ntp_background": "rgb(35, 24, 43)",
      "tab_loading": "rgb(165, 238, 180)"
    }
  }
}