Examine source code of Dark Pink Cosmos

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Dark Pink Cosmos",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(33, 33, 33)",
      "toolbar_text": "rgb(255, 66, 106)",
      "frame": "rgb(51, 51, 51)",
      "tab_background_text": "rgb(127, 126, 126)",
      "toolbar_field": "rgb(40, 40, 40)",
      "toolbar_field_text": "rgb(255, 100, 133)",
      "tab_line": "rgb(255, 30, 75)",
      "popup": "rgb(58, 58, 58)",
      "popup_text": "rgb(211, 211, 211)",
      "toolbar_top_separator": "rgba(0, 0, 0, 0)",
      "tab_loading": "rgb(255, 30, 75)"
    }
  }
}