Color constants defined in the helper files.
            All the constants are defined with the same names as in the
            Win32 API header files. For more information about the system colors
            see the description of the GetSysColor API function in MSDN library.
                COLOR_SCROLLBAR         = 0
            Scroll bars color
                COLOR_BACKGROUND        = 1
            Background color - desktop background
                COLOR_ACTIVECAPTION     = 2
            Active window caption background
                COLOR_INACTIVECAPTION   = 3
            Inactive window caption background
                COLOR_MENU              = 4
            Menu background color.
            COLOR_WINDOW            = 5
            Window background color
                COLOR_WINDOWFRAME       = 6
            Window border color
                COLOR_MENUTEXT          = 7
            Color of the menu texts
                COLOR_WINDOWTEXT        = 8
            Text color in the application windows 
                COLOR_CAPTIONTEXT       = 9
            Color of the texts in the window captions and color of the signs
            used in the standard window buttons (min, max and so on)
                COLOR_ACTIVEBORDER      = 10
            Border color of the active windows 
                COLOR_INACTIVEBORDER    = 11
            Border color of the inactive windows
                COLOR_APPWORKSPACE      = 12
            Background of the MDI frame windows  
                COLOR_HIGHLIGHT         = 13
            Highlight color - selected menu items, list box selections and so
            on 
                COLOR_HIGHLIGHTTEXT     = 14
            Text color for the highlighted items (see previous)
                COLOR_BTNFACE           = 15
            Background color of the buttons.
                COLOR_BTNSHADOW         = 16
            Color of the button shadow.
                COLOR_GRAYTEXT          = 17
            Text color for the disabled items.
                COLOR_BTNTEXT           = 18
            Button text color.
                COLOR_INACTIVECAPTIONTEXT = 19
            Text color for the captions of inactive windows.
                COLOR_BTNHIGHLIGHT      = 20
            Highlight color for the buttons
                COLOR_3DDKSHADOW        = 21
            3D effects shadow color
                COLOR_3DLIGHT           = 22
            3D effects light color
                COLOR_INFOTEXT          = 23
            Tool tip text color
                COLOR_INFOBK            = 24
            Background color for the tool tips
                COLOR_HOTLIGHT          = 26
            Track color. Highlighting tracked items such as links in the pages.
            (Not available on all the platforms)
                COLOR_GRADIENTACTIVECAPTION     = 27
            Second color for the active window's caption.
                COLOR_GRADIENTINACTIVECAPTION    = 28
            Second color for the captions of inactive windows
            
            Some substitutions
 COLOR_DESKTOP           = COLOR_BACKGROUND;
 COLOR_3DFACE            = COLOR_BTNFACE;
 COLOR_3DSHADOW          = COLOR_BTNSHADOW;
 COLOR_3DHIGHLIGHT       = COLOR_BTNHIGHLIGHT;
 COLOR_3DHILIGHT         = COLOR_BTNHIGHLIGHT;
 COLOR_BTNHILIGHT        = COLOR_BTNHIGHLIGHT;
            Note: Many of the system colors are actually substitutions
            but this depends on the the Windows version. Thus it is recommended
            to use the constants by meaning because future versions of the
            Windows may define different values for them. See MSDN library for
            more information.
            Example: If you want to make your page view dialog-like
            you can do the following in the function that handles the BODY's
            onLoad event:
            document.bgColor = external.sysColor( COLOR_BTNFACE );
            document.fgColor =  external.sysColor( COLOR_BTNTEXT );