Examine source code of Black with Red Trim

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Black with Red Trim",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(255, 0, 0)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(220, 10, 0)",
      "toolbar_field": "rgb(26, 26, 26)",
      "toolbar_field_text": "rgb(255, 0, 0)",
      "tab_line": "rgb(255, 0, 0)",
      "popup": "rgb(31, 31, 31)",
      "popup_text": "rgb(255, 0, 0)",
      "ntp_background": "rgb(0, 0, 0)",
      "popup_border": "rgb(255, 0, 0)",
      "sidebar_border": "rgb(255, 0, 0)",
      "tab_loading": "rgb(255, 0, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b87d9ee4-aa45-4cce-bfaf-f2deb2bbccaa}"
    }
  }
}