Examine source code of grigi vivaci

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "grigi vivaci",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-020-48c286b34e53380d46803c2e5603a5b2.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(109, 127, 119, 0.78)",
      "toolbar_text": "rgb(74, 74, 73)",
      "frame": "rgb(8, 41, 41)",
      "tab_background_text": "rgb(50, 97, 97)",
      "toolbar_field": "rgb(46, 86, 86)",
      "toolbar_field_text": "rgb(248, 251, 234)",
      "tab_line": "rgb(233, 240, 13)",
      "popup": "rgb(63, 70, 73)",
      "popup_text": "rgb(200, 202, 76)",
      "tab_loading": "rgb(233, 240, 13)"
    }
  }
}