Zerocolor

Set colormap entry for zero values to specified RGB color

The images are generated by the examples in the help section.

zerocolor(CLR)
Updates current figure's colormap so that zeros get color CLR. CLR is a vector between 0-1, e.g. [.4 .2 .9] or a standard MATLAB color string.

cmap = zerocolor(H,CLR)
Returns the updated colormap cmap based on the figure with handle H.

See the function help for all the syntax options. Not hard to adjust the code for an arbitrary value other than zero.

feedback is welcome