Why is my cache results not highligted anymore?

Question

why is my cache results not highligted anymore?

Answer 1

When I do a word/s search.
Normally the words I typed and searched on Google will be highlighted in different colors each word at the top of the webpage.
The same color will be highligted for each word/s whenever they appears all throught out the page. when I open it as cached.
Now the words don't highlight any more and no color even.
Here below info from About.com about what I am asking about:
http://google.about.com/od/searchingtheweb/qt/cache_syntax.htm
''''''Highlight Keywords With Google Cache Search''''''
Find Specific Information Faster With Google's Cache
By Marziah Karch, About.com Guide
Is it hard to find a specific piece of information on a large Web page? You can simply this by using Google's cached page to highlight your search term.
As Google indexes Web pages, it retains a snapshot of the page contents, known as a cached page. When a cached page is available, you'll see a Cached link at the bottom of the search result.
Clicking on the Cached link will show you the page as it was last indexed on Google, but with your search keywords highlighted. This is extremely useful if you want to find a specific piece of information without having to scan the entire page.
Keep in mind that this shows the last time the page was indexed, so sometimes images will not show up and the information will be out of date. For most quick searches, that doesn't matter. You can always go back to the current version of the page and double check to see if the information has changed.