Examine source code of A Cool Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "A Cool Theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-001-9c6d74e14860e77ee6f8f43e824bff25.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(6, 6, 6)",
      "toolbar_text": "rgb(81, 52, 233)",
      "frame": "rgb(78, 115, 84)",
      "tab_background_text": "rgb(209, 209, 38)",
      "toolbar_field": "rgb(255, 0, 90)",
      "toolbar_field_text": "rgb(43, 198, 59)",
      "tab_line": "rgb(46, 141, 153)",
      "popup": "rgb(220, 216, 109)",
      "popup_text": "rgb(203, 43, 203)",
      "tab_loading": "rgb(46, 141, 153)"
    }
  }
}