Examine source code of Matrix themed

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Matrix theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(225, 234, 239, 0.09)",
      "toolbar_text": "rgb(242, 152, 8)",
      "frame": "rgb(142, 179, 201)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(255, 255, 255, 0.39)",
      "toolbar_field_text": "rgb(252, 247, 253)",
      "tab_line": "rgb(236, 236, 62)",
      "popup": "rgb(8, 12, 4)",
      "popup_text": "rgb(135, 229, 54)",
      "tab_loading": "rgb(236, 236, 62)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c5cc9239-2837-480d-8f68-4f4507523c6f}"
    }
  }
}