Just an interesting observation.....I had always just assumed bees make new wax when they need it but apparently they re-use old wax too.
I did a cut out and fastened a bunch of the old comb with honey and brood (pretty dark/black) to empty frames in their new home. After a few weeks I went in to clean up the cut rubber bands and to remove some of the funky shaped honey comb I had given them as a snack until they started to bring in their own food. I was surprised to find many portions of the old comb re-attached to the new frames with the same black wax from which it was made...as if the bees chewed and re-applied the dark old stuff instead of creating that new, white wax that Im used to seeing.
That is all. Just thought it was very interesting and had never seen or heard of it before.