Examine source code of mossy

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "moss",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(148, 175, 116, 0.67)",
      "toolbar_text": "rgb(60, 42, 8)",
      "frame": "rgb(42, 119, 67)",
      "tab_background_text": "rgb(80, 57, 14)",
      "toolbar_field": "rgba(206, 200, 183, 0.75)",
      "toolbar_field_text": "rgb(80, 57, 14)",
      "tab_line": "rgba(148, 175, 116, 0)",
      "popup": "rgba(196, 250, 182, 0.54)",
      "popup_text": "rgb(80, 57, 14)",
      "button_background_active": "rgb(37, 91, 53)",
      "button_background_hover": "rgba(170, 196, 140, 0.67)",
      "frame_inactive": "rgba(148, 175, 116, 0.67)",
      "icons_attention": "rgba(234, 226, 13, 0.88)",
      "icons": "rgb(13, 60, 8)",
      "ntp_background": "rgb(79, 126, 61)",
      "ntp_text": "rgb(60, 42, 8)",
      "popup_border": "rgb(80, 57, 14)",
      "popup_highlight_text": "rgb(60, 42, 8)",
      "popup_highlight": "rgba(148, 175, 116, 0.67)",
      "sidebar_border": "rgb(13, 60, 8)",
      "sidebar_highlight": "rgba(148, 175, 116, 0.67)",
      "sidebar": "rgb(72, 115, 68)",
      "tab_loading": "rgb(13, 60, 8)",
      "tab_text": "rgb(60, 42, 8)",
      "toolbar_field_highlight": "rgba(148, 175, 116, 0.67)",
      "toolbar_field_text_focus": "rgb(206, 200, 183)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{93bb358d-5532-4727-899c-f91cdf4e768d}"
    }
  }
}