Examine source code of DSA theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "DSA theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(21, 17, 83)",
      "toolbar_text": "rgb(251, 195, 78)",
      "frame": "rgb(13, 13, 13)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(22, 7, 117)",
      "toolbar_field_text": "rgb(244, 253, 167)",
      "tab_line": "rgb(255, 201, 3)",
      "popup": "rgb(21, 17, 83)",
      "popup_text": "rgb(251, 195, 78)",
      "tab_loading": "rgb(255, 201, 3)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e5f269d2-fc1c-404b-b9a0-c228412bd736}"
    }
  }
}