Have you ever wanted to play out your Watchmen Rorschach fantasies? You know... murdering dogs, hating the world, speaking in a voice that's been smoking cigarettes for the last 50 years, being killed in the Antarctic snow? The normal stuff.
Then check out this video of a guy who found out how to make a real blot shifting mask.
From his description on YouTube:
Using Thermochromic paint pigment and clear screen printing base, you can now make an ink blot mask that changes like the character Rorschach from the movie The Watchmen. As you breath in and out, the color of the mask changes from black to white wherever the wearer's breath hits it and warms it to a point above 86 degrees F.