First, as the others have said, will it be on display from now on or heavily used? It may not hold up to much more use as the other fabrics will start to go out as well. Apllique a piece as close to the original color over the tear and do the same for the smaler pieces that need repair. Then in order to preserve the rest of it, just display it on a quilt rack out of direct sun. The alternative would be to use the pattern and construct a new one trying to duplicate the colors. No quick cure for this one I am afraid.