Examine source code of Custom, Dark Pink

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Custom, Dark Pink",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(72, 15, 47)",
      "toolbar_text": "rgb(255, 172, 217)",
      "frame": "rgb(45, 8, 28)",
      "tab_background_text": "rgb(255, 57, 166)",
      "toolbar_field": "rgb(50, 10, 32)",
      "toolbar_field_text": "rgb(255, 99, 186)",
      "tab_line": "rgb(162, 14, 96)",
      "popup": "rgb(162, 14, 96)",
      "popup_text": "rgb(255, 173, 218)",
      "icons": "rgb(255, 57, 166)",
      "sidebar_border": "rgb(255, 172, 217)",
      "tab_loading": "rgb(162, 14, 96)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0c3e6da4-d2c4-420e-9675-1ca8435b471e}"
    }
  }
}