Camouflage there is no background, the principal methods of camouflage are transparency, silvering, and countershading, while the ability to produce light is among other things used for counter-illumination on the undersides of cephalopods such as squid. Some animals, such as chameleons and octopuses, are capable of actively changing their skin pattern and colours, whether for camouflage or for signalling. It is possible that some plants use camouflage to evade being eaten by herbivores. Military camouflage was spurred by the increasing range and accuracy of firearms in the 19th century. In particular the replacement of the inaccurate musket with the rifle made
Buff (colour) century, the traditional colour of formal dress boot uppers was often described as "buff". Clothing depicted on John Bull, a national personification of Britain in general and England in particular, in political cartoons and similar graphic works, has often been buff coloured. Bull's buff waistcoats, topcoats, trousers and boot uppers were typical of 16th- and 17th-century Englishmen. Buff is a traditional European military uniform colour. Buff has good camouflage qualities as sand, soil, and dry vegetation are buff in many areas. The term "buff coat" refers to a part of 17th-century European military uniforms. Such coats were intended to protect