Change some vim syntax highlighting

.vim/colors/campo-dark-greenish.vim

@@ -5,6 +5,8 @@
 " The theme file original copied from the Tomorrow theme.
 " See https://github.com/chriskempson/vim-tomorrow-theme.git for it.
 " Hex color conversion functions borrowed from the theme "Desert256".
+"
+" @todo convert to new format (see campo-dark-blue.vim)
 
 if has('termguicolors')
   " Supports 24-bit color range