Examine source code of Polka Dot Purple

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Yuki",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-015-79a105bb546d3dfdd686392cf3ad1f57.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(62, 53, 117)",
      "toolbar_text": "rgb(230, 230, 230)",
      "frame": "rgb(62, 53, 117)",
      "tab_background_text": "rgb(230, 230, 230)",
      "toolbar_field": "rgb(62, 53, 117)",
      "toolbar_field_text": "rgb(230, 230, 230)",
      "tab_line": "rgb(185, 0, 255)",
      "popup": "rgba(62, 53, 117, 0.8)",
      "popup_text": "rgb(230, 230, 230)",
      "ntp_background": "rgb(62, 53, 117)",
      "popup_border": "rgb(185, 0, 255)",
      "sidebar": "rgb(62, 53, 117)",
      "toolbar_bottom_separator": "rgb(62, 53, 117)",
      "toolbar_field_border": "rgb(185, 0, 255)",
      "toolbar_field_separator": "rgb(62, 53, 117)",
      "toolbar_top_separator": "rgb(62, 53, 117)",
      "tab_loading": "rgb(185, 0, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4643505e-a9ce-4f47-87f6-7a0ce328a1d6}"
    }
  }
}