[Nicholas Ulbrick]

Hi Marco,

I am sure that you have found a work around by now, however for others who may be reading this post, one quick work around is simply to use the title tool.

Create a new title, and use the square object tool to create a solid colour that fills the screen.
From there you can enter it on a video track beneath the one you wish to focus upon and even collapse (F9) the too into one clip.

—
Nick.