Examine source code of pastelgreengrid

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "grid",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-006-51ab495c5f5dde6a3cddb22484acd00d.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(181, 202, 151)",
      "toolbar_text": "rgb(121, 107, 94)",
      "frame": "rgb(234, 229, 197)",
      "tab_background_text": "rgb(121, 107, 94)",
      "toolbar_field": "rgb(217, 223, 195)",
      "toolbar_field_text": "rgb(181, 138, 115)",
      "tab_line": "rgb(162, 141, 122)",
      "popup": "rgb(217, 223, 195)",
      "popup_text": "rgb(200, 151, 125)",
      "tab_loading": "rgb(162, 141, 122)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{da720343-54fa-4c9b-883a-c2d681bd28af}"
    }
  }
}