Examine source code of Tropical relax

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Tropical relax",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgba(212, 241, 255, 0.25)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(174, 220, 199)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(0, 88, 34)",
      "tab_line": "rgb(255, 208, 0)",
      "popup": "rgb(240, 255, 227)",
      "popup_text": "rgb(0, 35, 133)",
      "ntp_background": "rgb(205, 247, 255)",
      "ntp_text": "rgb(166, 108, 0)",
      "tab_loading": "rgb(255, 208, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{567792ed-803f-4c05-a9e2-13a138cceabd}"
    }
  }
}