Examine source code of Creamy Greyness

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Creamy Greyness",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-018-0ca3dfc7bb661ec53999d358812ce0ab.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(66, 66, 66)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(240, 240, 230)",
      "tab_line": "rgb(187, 49, 62)",
      "popup": "rgb(66, 66, 66)",
      "popup_text": "rgb(240, 240, 230)",
      "tab_loading": "rgb(187, 49, 62)",
      "bookmark_text": "rgb(240, 240, 230)",
      "frame": "rgb(16, 16, 16)",
      "tab_background_text": "rgb(211, 211, 202)"
    }
  }
}