Examine source code of minty dark with grid

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "mint-blavk-grid",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-005-f5f3cf677b1f132c75ddc7bd319dd1fc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(118, 146, 136)",
      "toolbar_text": "rgb(241, 247, 243)",
      "frame": "rgb(37, 37, 37)",
      "tab_background_text": "rgb(241, 247, 243)",
      "toolbar_field": "rgb(37, 37, 37)",
      "toolbar_field_text": "rgb(241, 247, 243)",
      "tab_line": "rgb(37, 37, 37)",
      "popup": "rgb(37, 37, 37)",
      "popup_text": "rgb(241, 247, 243)",
      "toolbar_field_border_focus": "rgb(118, 146, 136)",
      "toolbar_field_focus": "rgb(37, 37, 37)",
      "tab_loading": "rgb(37, 37, 37)"
    }
  }
}