Plugin for NotePad++ for rich text?

We can highlight the Text. Right click the Text Style Token->Using 1st Style.By using this we can highlight Text.There will be upto 5 style.

NP++ itself doesn't allow rich text, and most likely no plugin could add this functionality.

http://sourceforge.net/projects/notepad-plus/forums/forum/331753/topic/3445473

Long time has passed since this was asked, but this answer can help somebody else: You can easily define your own language, where you can set a list of keywords. Each keyword has a font-type, color, size and so on..

This menu can be found under Language > Define your language...