Examine source code of Army Green

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Old Steam",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(41, 43, 35)",
      "toolbar_text": "rgb(158, 159, 158)",
      "frame": "rgb(21, 22, 18)",
      "tab_background_text": "rgb(134, 134, 134)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(55, 59, 47)",
      "popup": "rgb(18, 18, 18)",
      "popup_text": "rgb(255, 255, 255)",
      "icons_attention": "rgb(163, 141, 83)",
      "ntp_background": "rgb(22, 22, 19)",
      "tab_text": "rgb(238, 240, 234)",
      "tab_loading": "rgb(55, 59, 47)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7afab890-2a9d-4ced-9faf-e2b360d1f21d}"
    }
  }
}