You select a pen for modification (or just viewing) by left-clicking
on one of the colors in the palette display. 

This becomes the "active" pen.

The "currently selected pen's color" box on the middle-right side of the 
window will change to show you the color associated with the pen you just 
picked.

Once a color is selected, it's RGB components can be modified by using
the three Red/Grn/Blu sliders.

See the "... Window Description" section for specific guidelines.


I intended PaletteTool to be somewhat intuitive in how it works, so I hope
the lack of detailed directions is not an issue.

If you have any specific questions on PaletteTool's operation which don't
seem to be covered by this file, please contact me and I'll do my best
to help you out.