Commentary on Rewritable paper goes technicolor: Metal-ligand complexes display a range of long-lasting colors that can be erased on demand, allowing paper to be reused.

The article presents the views of the readers regarding the article on rewritable paper. The readers mentions that the article did not contain any information on the waste products created out of the production of ligands and how this process could affect the environment. Another reader expresses the use of recycle paper in several countries that doesn't affect the environment.