Examine source code of Nice Green

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Nice Green",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-026-829b05416f823e170310e7c826ad1bec.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(48, 71, 53)",
      "toolbar_text": "rgb(109, 174, 110)",
      "frame": "rgb(56, 94, 54)",
      "tab_background_text": "rgb(162, 213, 162)",
      "toolbar_field": "rgb(56, 94, 54)",
      "toolbar_field_text": "rgb(109, 174, 110)",
      "tab_line": "rgb(109, 174, 110)",
      "popup": "rgb(48, 71, 53)",
      "popup_text": "rgb(109, 174, 110)",
      "popup_border": "rgb(109, 174, 110)",
      "sidebar_text": "rgb(162, 213, 162)",
      "sidebar": "rgb(48, 71, 53)",
      "toolbar_bottom_separator": "rgba(162, 213, 162, 0.52)",
      "toolbar_field_border": "rgba(162, 213, 162, 0.52)",
      "toolbar_field_separator": "rgba(162, 213, 162, 0.52)",
      "toolbar_top_separator": "rgba(162, 213, 162, 0.52)",
      "tab_loading": "rgb(109, 174, 110)"
    }
  }
}