Examine source code of Tsukihi

{
  "manifest_version": 2,
  "version": "6.0",
  "name": "tsukihi",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 100, 100, 0)",
      "toolbar_text": "rgb(231, 92, 147)",
      "frame": "rgb(1, 187, 193)",
      "tab_background_text": "rgb(247, 247, 247)",
      "toolbar_field": "rgba(1, 187, 193, 0)",
      "toolbar_field_text": "rgb(231, 92, 147)",
      "tab_line": "rgb(1, 187, 193)",
      "search_bar_color": "rgba(0, 83, 87, 0)",
      "popup": "rgba(0, 83, 87, 0.75)",
      "popup_text": "rgb(231, 92, 147)",
      "tab_loading": "rgb(1, 187, 193)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c2f408a6-4bc4-4e5a-a9d8-a2c13e8b5539}"
    }
  }
}