Opaltone is not the name, but I am getting closer!
There is a color scheme that I have always liked that I do not know the name for. However, it can be viewed here:
http://colorschemedesigner.com/ At the site, select [Color Space]->[Opaltone Colors] from the menu.
The muted blend of colors that appear no matter what which pallette is chosen (mono, compliment, triad, tetrad, analogic, highlighted analogic) is what something I have
always found appealing.
Looking at the graph in the lower left panel, I am noticing that the radius of the dots from the center is consistent. Perhaps that is the property that defines the color scheme.
I am not there yet! but I am closer!