nts are drawn with the indicated color
% (saturation = 1), and colors of bounds objects (patch, errorbars, etc)
% use lighter versions of the color, getting lighter as bounds expand
% (default limits are [0.1 0.5]).
%
% |ensemble2bnd(..., 'cmap', colors)| provides an alternative color order
% for the datasets plotted.  
%
% |ensemble2bnd(..., 'axis', hax)| adds any plots to the indicated axis
% rather than the current axis.
%
% |ensemble2bnd(..., 'whisker', w)| changes te whisker length factor used
% to cal