Examine source code of Cosmic Sunstone v2

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Cosmic Sunstone v2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left bottom"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(89, 99, 142, 0.75)",
      "toolbar_text": "rgb(35, 243, 255)",
      "frame": "rgb(89, 99, 142)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(232, 53, 159, 0.13)",
      "toolbar_field_text": "rgb(35, 243, 255)",
      "tab_line": "rgb(35, 243, 255)",
      "popup": "rgb(177, 178, 221)",
      "popup_text": "rgb(98, 102, 183)",
      "tab_loading": "rgb(35, 243, 255)"
    }
  }
}