De-goof and partially normalize:
  apache2.nanorc
  apacheconf.nanorc
  aptsrclist.nanorc
  asm.nanorc
  bash.nanorc
  changelog.nanorc # NOTE: changelog.nanorc and changelogs.nanorc are questionable, and may cover only some niche use cases
  changelogs.nanorc # SEE: NOTE for changelog.nanorc
  c.nanorc
  coffee.nanorc
  config2.nanorc
  config3.nanorc
  configfiles.nanorc
  config.nanorc
  conf.nanorc
  conky.nanorc
  css.nanorc # NOTE: css.nanorc is questionable in terms of completeness.
  cython.nanorc

Remove commented legacy blocks from:
  changelog.nanorc

Remove altogether:
  debian.nanorc # NOTE: Nearly identical to aptsrclist.nanorc, except with less-sensible colour choices.