Examine source code of Polygonal Spikes

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Polygonal Spikes",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(216, 26, 103, 0.61)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(132, 26, 101)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(178, 94, 157, 0.41)",
      "toolbar_field_text": "rgb(255, 249, 251)",
      "tab_line": "rgb(40, 193, 212)",
      "popup": "rgb(172, 94, 61)",
      "popup_text": "rgb(255, 255, 255)",
      "frame_inactive": "rgb(34, 115, 32)",
      "tab_loading": "rgb(40, 193, 212)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{78dc6587-d9e0-4740-ac87-59af27ee82ca}"
    }
  }
}