It can be quite useful to add colour to your output from grep, since it helps is identifying matches and hence makes sure you do not overlook something.
Basic example:
$ grep --color <pattern> <file>Default colour is red, but can be changes using the environment variable GREP_COLOR:
An example:
$ GREP_COLOR='1;36' grep --color <pattern> <file>I have only used two parameters in the above example, You can in addition set the background colour, please see the listed source for more details.