Possible Clues:

• Dockers fabric
• Brownish-yellow starter's much talked about
• Dullish brown colour
• Military clothes
• Uniform choice, as in 1900 or with the Falklands factor
• Military dress helping to make a sheikh a king
• Army fabric
• Drably coloured security device for motorist, say
• Army dress material
• Just a shade like what you need to start the car, by the sound of it