Examine source code of cheese yello

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "cheese yello",
  "theme": {
    "images": {
      "additional_backgrounds": []
    },
    "properties": {
      "additional_backgrounds_alignment": [],
      "additional_backgrounds_tiling": []
    },
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(241, 225, 85)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(182, 169, 53)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(182, 169, 53)",
      "tab_line": "rgb(246, 235, 134)",
      "popup": "rgb(241, 225, 85)",
      "popup_text": "rgb(0, 0, 0)",
      "tab_loading": "rgb(246, 235, 134)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c72e446b-3a51-4151-91c8-f8713886d30f}"
    }
  }
}