EOTAC 25% Off Sale. As a thank you to our readers at the Soldier Systems Daily, EOTAC is offering a special 25% off discount. For the next two weeks you can take 25% off your order of EOTAC Operator Grade Tactical and Discreet clothing when purchased at www.eotac.com.
Here are individual colors for a rainbow of fire, for flame colors from red to violet... 1  Red Fire. 2  Orange Fire. 3  Yellow Fire.  Green 1  Fire. Blue Fire.  Violet Fire.
Photo: Metals are generally colorless, but they do glow with characteristic (and different) colors when you hold them in a flameâa technique called a flame test. This greenish-blue flame is being produced by a pipe made from copper and nickel.teel is an alloy of iron, for example, that contains a small amount of carbon (different types of steel contain more or less carbon). Bronze is an alloy of copper and tin, while brass is the alloy you get when you mix copper and zinc.