From the way I have heard it described, you would take your blanks and stabilizing solution in your first color, soak your blanks in it either without vacuum or very little, with only partial penetration, remove the blanks, let as much solution drain off, and cure the stabilizing. Now that part will not accept any more stabilizing, but the un penetrated areas will take a second round. The second time, with a different color, pull a full vacuum so the stabilizing fully penetrates the wood, then cure it. When turned,you will have areas that have both colors....