Nimbus is a copper free, pastel blue-green.  Based on our color Atlantis, Nimbus is an easy to work color, with no fear of REDuction.  If you like Zen, but don't want to worry about reduction, then Nimbus is the color for you.
 
Working Tip:  Be sure not to get this color too hot when in a thin application as to not cook out the pastel base and turn it transparent.  Work in a neutral flame. Blow outs work best with the pastel colors.