Possible Clues:

• Camouflage colour for uniforms or equipment, especially of the US army in the Second World War
• Colour of a lovebird flying around
• Poet with horrible old retro GI uniform
• Dull colour of old poet, ill, withdrawn
• Standard colour of US military vehicles and GI uniforms in the Second World War
• Military uniform colour
• There were no survivors, except revolutionary in uniform
• Uniform material was adopted by soldiers and sailor