Examine source code of Cool Crystal Blue

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Crystal Blue",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-036-40a272fe657f748396e017c7a64ee2dc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(29, 199, 211)",
      "toolbar_text": "rgb(18, 2, 7)",
      "frame": "rgb(9, 26, 36)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(76, 76, 143)",
      "tab_line": "rgb(0, 0, 0)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(7, 7, 2)",
      "button_background_active": "rgb(241, 33, 33)",
      "button_background_hover": "rgb(140, 140, 140)",
      "tab_loading": "rgb(0, 0, 0)"
    }
  }
}