Examine source code of Sanrio Theme (Dark)

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Sanrio Theme (Dark)",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(222, 232, 195, 0.49)",
      "toolbar_text": "rgb(108, 151, 162)",
      "frame": "rgb(189, 234, 239)",
      "tab_background_text": "rgb(132, 118, 91)",
      "toolbar_field": "rgba(188, 231, 212, 0.36)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(197, 228, 231)",
      "popup": "rgb(189, 229, 231)",
      "popup_text": "rgb(122, 95, 136)",
      "tab_loading": "rgb(197, 228, 231)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{46c604c4-1c3d-4c7b-a3ad-d9614055117b}"
    }
  }
}