Is there a color or combination of colors that accurately depicts the colors of the Condor Legion uniforms?

Sounds like they mainly wore OD Green Spanish-style uniforms...

"In effect, the Condor Legion was a fully equipped and coordinated task force. Legion personnel were recruited from the army, navy and Luftwaffe. The officers of ground and air elements were issued Spanish-style olive-green uniforms, while officers of the naval units retained dark blue German naval uniforms."

From HistoryNet. A good article on the Condor Legion.