Suppose I have a container:
This is a red apple
How to color a word \"red\" with red color? Some
If you don't want to add html/javascript the simpel answer is NO you can't
Take a look at the following specification http://www.w3.org/TR/css3-selectors/#selectors
That are all available selectors for CSS3 and therefor it's simply impossible, and that's your answer.
You have 2 options left without changing the content one is all ready described here: