You may want to reverse a headline.

Let's see how you can do it manually, step-by-step, starting with a standard headline on which you applied an appropriate paragraph style

In the first step, end the text editing, and then click to select the headline frame. On the Area/Image colors palette, select the K fill color. As the text is still black, it temporarily disappears:

Now, double-click the headline frame, press CTRL+A, and then on the Text Color/Effects palette, select the White or [Paper] color: the text is displayed again.

Fine tuning: end text editingù, click the headline frame, and then on the Justification palette, enter the frame margin in Border margin.