Examine source code of Xweetara

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Xweetara",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(176, 233, 221)",
      "toolbar_text": "rgb(4, 164, 134)",
      "frame": "rgb(87, 208, 185)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(102, 41, 136)",
      "tab_line": "rgb(87, 208, 185)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(102, 41, 136)",
      "tab_loading": "rgb(87, 208, 185)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{aaff926f-f209-4d71-8641-7fce4ae6ed3f}"
    }
  }
}