Display a range of text in different color programmaticaly

Hi,

We have to show the range of text in different style and color explicitly at run time programmatically.

We have implemented key press. Now we want to display a range of text in different style and color on key press(spacebar).
Also we have supressed the toolbarset by setting toolbarset="None" in fckconfig.js ,so we want to do this programmatically.

Any suggestions

(We need this Immediately !!!)