A list of available palettes is in the upper left section of the screen-click on the desired palette to see it take effect. Below that are two arrays of colored buttons, representing the dynamically allocated color cells for normal and shadow colors. To find out what resources are being affected by a color cell, click and hold the arrow button next to it. As a shortcut, you can click on the screen facsimile in the upper right corner of the dialog box. If the portion you click on is colored by one of resource values controlled by the customizer, the popup for the appropriate color button will be displayed. To modify a single color cell, click on the corresponding color button. A colormix widget will pop up, and, as you modify the color, you will see these modifications reflected in your workstation environment. Use the colormix widget reset button to return to the starting color at any time. You can also change the color cell you are modifying by clicking on a different color button while the colormix widget is displayed. The automatic shadowing option causes shadow and select colors to be automatically updated when their corresponding background colors are changed. The standard Motif shadowing algorithms are used for these calculations. Use the File menu to modify, add, and delete color palettes as follows: o To modify an existing palette, select the palette, change to the desired colors, and choose Save Palette from the File menu. o To add a new palette to the list box, select an existing palette, modify the colors as necessary, and choose Save Palette As... from the File menu. A message box prompts you for the name of the new palette. o To delete a palette, select the palette in the listbox and choose Delete Palette from the File menu. Changes made through the File menu will automatically update the file that contains the resource defaults, CUSTOM.DAT. The File menu Exit button causes the customizer application to exit. A warning dialog is displayed first. Note that the color cells allocated by the customizer (and used by the currently running applications) will be freed. After the customizer exits, if the colors of the currently running applications are not correct, the applications will need to be restarted to restore normal colors. Normally, there is no need to exit the color customizer-it is typically kept running all the time, like the Session Manager.