X-Ray Goggles will serve your remix on HTTP or HTTPS depending on the original page.
Installing X-Ray Goggles is easy. You can then poke around on any web page and transform it into your own creation! Here's how.
As of September 2015, projects made with the older version of Thimble are still accessible via https://thimble.webmaker.org.
Understand the difference between hacking with X-Ray Goggles, where you fork a copy of a webpage, versus the general term "hacking" where you break into a page.