Because dull black is the best colour for spy aircraft
Black
What is SR71 auto insurance
http://www.aerospaceweb.org/aircraft/recon/sr71/sr71_11.jpg
3.5
Boeing
Nobody really knows because the black bird wasn't ment to travel.
2193 mph
Stratosphere
2200 mph
the stratosphere!
It is the Lockheed SR-71 "Blackbird", a reconnaissance aircraft.
A black bird is black in color.