MultiCam is a modern multi-environment camouflage pattern developed by Crye Associates in conjunction with U.S. Army Soldier Systems Center (also known as U.S Army Natick labs). The pattern was on the race to replace the out-dated 3-color desert and Woodland patterns, but eventually lost to the Universal Camouflage Pattern seen in the Army Combat Uniform. The pattern is available to civilians. 
Appearance
MultiCam has background colors of a brown to light-tan gradient and lime green blending in between, the main part consist of green to yellowish green gradient and finally dark brown and light pinkish blotches spread throughout the pattern. This allows for the overall appearance to change from greenish to brownish in different areas of the fabric, while having smaller blotches to break up the bigger background areas.
There is also a non-licensed copy of the original pattern which is slightly darker and printed on different fabric with different characteristics. This is usually advertised as "MC" instead of "MultiCam".
Another non-licensed copy, very similar to original MultiCam, is used by Polish special forces GROM, ZOA and BOR (Polish secret service) in their newest uniforms.
