Examine source code of rosito

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "rosito",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(255, 208, 240)",
      "toolbar_text": "rgb(57, 57, 57)",
      "frame": "rgb(255, 223, 245)",
      "tab_background_text": "rgb(53, 53, 53)",
      "toolbar_field": "rgb(255, 223, 245)",
      "toolbar_field_text": "rgb(57, 57, 57)",
      "tab_line": "rgb(255, 116, 211)",
      "popup": "rgb(255, 223, 245)",
      "popup_text": "rgb(57, 57, 57)",
      "ntp_background": "rgb(255, 223, 245)",
      "ntp_text": "rgb(53, 53, 53)",
      "popup_border": "rgb(255, 116, 211)",
      "tab_selected": "rgba(255, 116, 211, 0.15)",
      "tab_text": "rgb(53, 53, 53)",
      "toolbar_bottom_separator": "rgb(255, 116, 211)",
      "toolbar_field_highlight": "rgb(223, 176, 176)",
      "toolbar_field_text_focus": "rgb(53, 53, 53)",
      "tab_loading": "rgb(255, 116, 211)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b22f7351-d552-40de-9b4f-537a13546c9d}"
    }
  }
}