INT 10,B - Set Color Palette

	AH = 0B
	BH = palette color ID
	   = 0	to set background and border color
	   = 1	to select 4 color palette
	BL = color value (when BH = 0)
	   = palette value (when BH = 1)

	Palette    Pixel	  Color
	   0	     0	    current background color
		     1	    green (2)
		     2	    red (4)
		     3	    brown (6)
	   1	     0	    current background color
		     1	    cyan (3)
		     2	    magenta (5)
		     3	    white (7)

	- does not work for all EGA and VGA video modes
	- sets border color in text mode (BH = 0)