99% Invisible is one of my favorite podcasts. Roman Mars talks about architecture and design in a really thoughtful and compelling way. He had a recent episode about razzle dazzle ships' camouflage in which he included images from the Rhode Island School of Design (RISD)'s Fleet Library (which is NOT connected to the Navy in any way :-)). Check out this fascinating listen about ships and camouflage.

(Erik Gould, courtesy of the Fleet Library at RISD, Providence, RI..)

(Erik Gould, courtesy of the Fleet Library at RISD, Providence, RI.)

Becoming invisible with your surroundings is only one type of camouflage.  Camofleurs call this high similarity or blending camouflage.  But camouflage can also take the opposite approach.

(Erik Gould, courtesy of the Fleet Library at RISD, Providence, RI.)