Changing the color of seats

[dpbrowne]

Does anyone know how I can change the color of my seats. I just picked up two front seats in outstanding condition for my 83 300SD. I got them out of a 85 500SEL. They are leather, maroon in color and I want to dye them dark blue to match my interior. What do I do and how do I do it. I know that the easy way to go is with covers but I do not want to rely on that fix. I feel like I have a new car with the seats.