Examine source code of my melody<3

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "my melody<3",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 255, 255, 0.26)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(255, 238, 240)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgba(255, 255, 255, 0.46)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgba(255, 118, 144, 0.97)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_active": "rgba(255, 255, 255, 0)",
      "icons_attention": "rgba(255, 15, 52, 0)",
      "icons": "rgba(54, 48, 50, 0.97)",
      "ntp_background": "rgba(255, 255, 255, 0.97)",
      "popup_border": "rgba(255, 200, 210, 0.97)",
      "tab_loading": "rgba(255, 118, 144, 0.97)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{140b3890-d151-4a94-8a0d-de21095d9871}"
    }
  }
}