If you have had this extension installed and it no longer works here is the reason why
Google and Mozilla have removed the Stylish browser extension from their respective add-on stores after the publication of a report this week that accused the extension of logging users' browser histories and sending the data to remote servers.
"We decided to block [Stylish] because of violation of data practices outlined in the review policy," said Mozilla software engineer Andreas Wagner in a bug report opened earlier this week.
The Stylish Firefox add-on page has been removed, while Mozilla plans to disable the extension in users' browsers and show a message explaining its decision.
Google did not give out any explanation, but the Stylish Chrome Web Store page now returns a 404 error.
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