What do you mean by blank box?

I am not sure I know exactly what you are after but let me explain how I have done some titling things in the past.

I created a few full screen single color background .jpegs for my projects, at first I did this in Windows Paint, but later I started using the add-on program that Magix provided.

This gave me the ability to do a lot more with the text which is something I like to play around with. So my openning seen can be multimple backdrops

I did this simply bu crossfading multiple background colors together in one timeline like below:

Once I save this out as a file, I can reuse it over and over again or burn it as a intro file to my collection. I hope this is somewhat about what you were asking for...