what colors can make a desert color with crayons?

3 answers

yellow, brown, gray, tan

and probably a little green for cacti

Of course -- there's the Painted Desert --
http://www.google.com/search?q=painted+desert&biw=1920&bih=955&tbm=isch&tbo=u&source=univ&sa=X&ei=kNwIVJ6CCNLtyASY3YLYBQ&sqi=2&ved=0CCoQsAQ
oh... thanks
You're welcome.