Change comment's color  
 

This tool allows us to change the comments background color.
The colors change in every click we make to the bar button.
It works every 5 clicks.
For example:

Comments color before we use the tool:
 
 
1st click:
 
 
2nd click:
 
 
3rd click:
 
 
4th click:
 
 
5th click:
the comment's original color is restored.