If you download the google toolbar, there is a feature like this that
you can use. You can download the Google toolbar at the link below:
Using the toolbar you can toggle the highlight feature on or off.
Each of the words that you type in your search is assigned a different
color for the document that you open.
For example, if you typed the words "cat dog" in the Google toolbar,
when you open one of the documents from the search results and click
the "Highlight" button on the Google Toolbar, all of the instances of
the word "cat" will be highlighted in one bright color and "dog" will
be in a different color.
Another way to get the same effect is to view the cached pages instead
of the current page. When viewing cached pages, Google displays your
search words highlighted in different colors. However, when viewing
cached pages, you are not necessarily looking at the most current view
of the page which may or may not work to your advantage when
Thanks for your question, and please ask for clarification if any of
this is unclear.