Examine source code of Komi-cat

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Komi",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png",
        "images/1.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top",
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(13, 13, 14)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(8, 11, 33)",
      "tab_background_text": "rgb(205, 212, 214)",
      "toolbar_field": "rgb(29, 29, 36)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(255, 35, 136)",
      "popup": "rgb(31, 34, 61)",
      "popup_text": "rgb(216, 226, 236)",
      "tab_loading": "rgb(255, 35, 136)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2e0e5e37-4a84-4987-99fc-a14dd8a226eb}"
    }
  }
}