You CAN get 24 bits/pixel by using m64config to switch the video resolution 
to 800x600. What I did was to do a command-line login, then issue 
	m64config -res 800x600x72 now -depth 24

This requires that a patch be applied first: 	
	105362-13 PGX 2.6: M64 Graphics Patch (Solaris 2.6)


-Contributed by Tim Lavin