Examine source code of Nice Nature Pixel

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Nice Nature Pixel",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(82, 40, 32)",
      "toolbar_text": "rgb(207, 36, 3)",
      "frame": "rgb(130, 56, 38)",
      "tab_background_text": "rgb(199, 177, 162)",
      "toolbar_field": "rgb(98, 48, 39)",
      "toolbar_field_text": "rgb(199, 177, 162)",
      "tab_line": "rgb(52, 195, 31)",
      "popup": "rgb(199, 177, 162)",
      "popup_text": "rgb(98, 48, 39)",
      "icons": "rgb(207, 36, 3)",
      "popup_highlight": "rgb(186, 83, 41)",
      "sidebar_text": "rgb(71, 35, 28)",
      "tab_background_separator": "rgb(19, 189, 14)",
      "tab_loading": "rgb(61, 210, 22)",
      "tab_selected": "rgb(71, 35, 28)",
      "tab_text": "rgb(199, 177, 162)",
      "toolbar_field_focus": "rgb(68, 31, 16)",
      "toolbar_field_separator": "rgb(61, 210, 22)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f1629a09-9da6-4bd5-a203-15c9901f0a28}"
    }
  }
}