GETVGAPAL()
 Determines the palette settings on a VGA card
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 Syntax

     GETVGAPAL(<nColor|cColor>,<cRGB>)
         --> nPaletteValue

 Arguments

     <nColor>|<cColor>  Designates a color represented by a number in the
     range of 0 to 15, or a color code that corresponds to the one in SET
     COLOR TO.

     <cRGB>  May designate as R, G, or B to determine the corresponding
     palette value.

 Returns

     GETVGAPAL() returns the red, green, or blue palette value for the
     designated color.  When invalid paramerters are specified, a value of -1
     is returned.

 Description

     On a VGA adapter, each color is a combination of the three values for
     red, green and blue.  Each value can be in the range of 0 to 63, to
     permit you to install different color palettes.

     GETVGAPAL() queries the R, G, and B values for all 16 colors.  The
     individual color can be a number in the range of 0 to 15, or represented
     as a color code corresponding to the CA-Clipper SET COLOR TO.

 Note

     .  This function is implemented in the enclosed Colorpal.prg
        program.

 Example

     Determines the palette value of red in the color cyan:

     GETVGAPAL("BG", "R")