Examine source code of Light Green Graph Paper

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Light Green Graph Paper",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-006-51ab495c5f5dde6a3cddb22484acd00d.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(200, 200, 200)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(83, 83, 83)",
      "toolbar_field": "rgb(243, 243, 243)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(72, 255, 215)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "tab_loading": "rgb(0, 0, 0)",
      "tab_selected": "rgb(224, 255, 230)",
      "tab_text": "rgb(0, 0, 0)"
    }
  }
}