Years ago a friend asked me to repair her quilt made of very old fabrics. I found fabrics that were as close as possible and then set them in water with a little bleach and watched them until they got to the shade I wanted She couldn't tell the old from the new so I was happy. Years later, she again asked me to repair the same quilt as it got used constantly but it was made from 2.0 squares and the last time there were over 60 squares to be replaced all by hand and then quilt it. I told her no but that I would make a new quilt for her. She looked thru all the quilts I'd made before and picked out one I still had the fabric for so made that for her. Used up all the fabric on the second quilt which was good for me.
I have an old quilt with Susan Bee (I think that's what they're called) blocks. I washed it like an idiot and all the seams came apart. Of course the sashings are made out of that soft green you can't find any longer but the blocks are still in tact so will rip it apart and replace the sashing someday. It's been in my bedroom closet for 13+ years now. Someday I'll get to it.