Watch your text or logos shine with a luxurious gold and silver foil stamping effect in Photoshop! This in-depth tutorial ...

Colorado’s Chromatic Technologies uses fat to create disappearing ink that reacts to heat. The result? The Total Eclipse of the Sun Forever Stamp from the US Postal Service.

Celebrate the Eclipse With a Color-Shifting Stamp Your next letter just got more celestial . Erin Blakemore - Correspondent. June 21, 2017. ... thermochromic ink that responds to the body's heat.

The U.S. Post Office is releasing color-changing stamps to commemorate a historic solar eclipse that will take place on Aug. 21.