The colormapeditor changes the colormap of the current figure. It does not save or store the colormap in any way.
You will most likely have to follow a workflow something like this:
figure() % open a figure, or even better plot an image or something similar
colormap(somecolormap) % change to somecolormap
colormapeditor() % adjust the colors until you are happy
Once you are happy with the colormap continue by storing the colormap:
map = colormap(); % store colormap in an array
and then inside the loop use map to set the figure/axes colormap as required:
for ...
fgh = figure();
...
colormap(fgh,map)
end
