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### Issue Details
Electron Version: All Version
Operating System: macOS 10.15.3
Last Known Working Electron version: Never

### Bug
The color picker in devtools does not work.
In devtools if you want to change the colors of the CSS code. When you click on a color a color picker is supposed to appear but it does not appear.

### Screenshots
<img width="1013" alt="Capture d’écran 2020-09-07 à 11 42 44" src="https://user-images.githubusercontent.com/70572698/92374841-988ea280-f100-11ea-96be-afc93f6dd645.png">

shell/browser/api/electron_api_web_contents.cc
file_system_path)));
}
void WebContents::DevToolsStopIndexing(int request_id) {
  auto it = devtools_indexing_jobs_.find(request_id);
  if (it == devtools_indexing_jobs_.end())
    return;
  it->second->Stop();
  devtools_indexing_jobs_.erase(it);
}
void WebContents::DevToolsSearchInPath(int request_id,
                                       const std::string& file_system_path,
                                       const std::string& query) {
  if (!IsDevToolsFileSystemAdded(GetDevToolsWebContents(), file_system_path)) {
    OnDevToolsSearchCompleted(request_id, file_system_path,
                              std::vector<std::string>());
    return;
  }
  devtools_file_system_indexer_->SearchInPath(
      file_system_path, query,
      base::BindRepeating(&WebContents::OnDevToolsSearchCompleted,
                          weak_factory_.GetWeakPtr(), request_id,
                          file_system_path));
}
#if defined(TOOLKIT_VIEWS) && !defined(OS_MAC)
ui::ImageModel WebContents::GetDevToolsWindowIcon() {
  return owner_window() ? owner_window()->GetWindowAppIcon() : ui::ImageModel{};
}
#endif
#if defined(OS_LINUX)
void WebContents::GetDevToolsWindowWMClass(std::string* name,