, a, <span style="color: rgb(204, 51, 204);">'hide_axes'</span>);	<span style="font-style: italic;">% <span style="color: rgb(51, 51, 255);">blue</span> channel image</span><br></pre>
Some of the RGB channels can be left empty to suppress one color. Each
object is re-scaled in the [0 1] range to use the full channel colors.
However, when using the option<span style="color: rgb(204, 51, 204);">
'norm' </span>keyword, the scaling is made global to all images,
enabling comparison of relative intensity between 