Examine source code of Black Moonlight

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Black Moonlight",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-028-5466583598afcc175c90e35aceb1246b.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(31, 32, 36)",
      "toolbar_text": "rgb(99, 121, 242)",
      "frame": "rgb(21, 21, 24)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(99, 121, 242)",
      "popup": "rgb(31, 32, 36)",
      "popup_text": "rgb(98, 102, 183)",
      "tab_loading": "rgb(99, 121, 242)"
    }
  }
}