Use the Prism.vizColormap resource to specify a file that contains the colors to be used in colormap visualizers. You can also change the setting of this resource via the Customize utility; see " Using the Customize Utility". See " Resources" for a discussion of how to create a visualizer color file.
Use the resource Prism.spectralMapSize to specify how large the default spectral color map is to be for colormap visualizers. The default is 100 entries. You would typically use this resource to specify fewer entries, if this number causes problems on your workstation. To set the default to 50, for example, set the resource in your X resource database as follows:
Prism.spectralMapSize: 50