The logos are finally colored (so to speak) with a white rectangle and a text label describing the grouping of the logos. This should be sufficient for the first exercise. Either the audience is now comfortable with what we'd be talking in sequence, or they're totally confused and they've left.

(That fedora is in place for redhat, politically incorrect, and that we hope our audience points it out - if they do, we can stop the presentation and think of something else!)