INT 62 u - FGDRIVER v4.02 - "FG_DEFCOLOR" - ASSIGN COLOR VALUE TO COLOR INDEX
	AX = 0018h
	BX = color index (0000h-00FFh)
	CX = new color value (0 to maximum color value for current video mode)
Notes:	the FGDRIVER functions are rearranged with each major release, but
	  their parameters do not change (see #03474)
	This call is ignored in text modes and 256-color graphics modes
SeeAlso: AX=0040h,AX=0045h,AX=00AAh