Double-click the specified color in the color scale bar
to change this color. In the Color picker dialog you can use
the left and right sliders to define the limits. The center slider change a
gradation spectrum between the limits.
To modify the color scale bar, double-click its rectangle
to display the Color Scale dialog box, or click the
Color Scale tool button:
Click the Minimum and Maximum
buttons to set the colors for a minimum and maximum values;
Click Save to file or Load from file buttons to
save or load the color spectrum to the text file (colors are RGB values);
Set number of colors. Maximum is 239;
Click the Values button to modify a contour levels;
Set the Up and Down fractions relative to window
height for the top and bottom margins;
Set the minimum and maximum values, if you want the fixed levels.