Color Palettes allow you to define the colors that will be used in Analysis graphs and to allocate those colors to specific series. There is a general, default palette and you can also define a Color Palette for a specific session. You can add new colors to a palette and delete existing colors from a palette, but a palette must contain at least thirty two colors.
When a new session is created, or when you open an existing session that does not have a Graph Colors file, Analysis uses the general color palette. When you open an existing session that has a Graph Colors file, Analysis uses the file from the session folder.
The colors are allocated to the graph in the order they appear in the palette. Colors allocated to a series, are used to represent graph elements for the series in the order the colors were allocated. To change the colors in the graph, update the palette, close and re-open the graph.
For more information, see Color Palette Dialog Box.