Vim is a highly configurable text editor for efficiently creating and changing any kind of text. It is included as "vi" with most UNIX systems and with Apple OS X.
Basically you will be able to use colorful text editing environment based on the element type of the file like below:
In my case, I am not to see the remark easily, so I changed its environment by creating ~/.vimrc like below
So eventually you will be able to see a little bit different colors like below: