status.i4.v = window_key_color_c(key_color.i4.v)

	This routine sets the color for characters typed in by the user.
	It also returns the the previous setting.

	key_color	color for typed characters (passing a value of
			CLIB_DEFAULT_ARG allows the caller to simply read
			the present value) (color constants are in 'cnsparam')

	This function returns status values as follows:

	CBS_MEMFAIL		dynamic memory allocation failure
	otherwise		previous key color

	This function requires the following include files:

	cnsparam_h, cbslib_h, acnet_errors_h

	Related functions:

	window_key_case_c, window_key_echo_c, intro_tv_windows

	C/C++ usage:

	int	status;
	int	key_color = RED;

	status = window_key_color_c(key_color);