Disruptor (Störer)
The CD defines a disruptor as an element of design (see screenshot below). That's just a text-filled, CD-color-filled circle.
While it's easy for us to create such a thing, it might not be for novice LaTeX Beamer users.
We might consider creating a command to create a disruptor, i.e. a parameterized version of
\tikz[overlay]{\node [fill=fzjyellow, circle, text=white, align=center] {Störer\\Test};}
Consider this idea very low priority.
Edited by Andreas Herten