The technique of inserting different colours of text around a graphic is a good one, as was shown in one of the previous design tips. So I've used this to enhance the Distributed Systems and Mobile Agents graphic.

The constast is not so good for the white text, thus we can darker the graphic:

and we can add a little bit of interest to the agent graphic:

So let's try the graphic in the previously developed poster:

which doesn't quite work, as the aspect ratio does not allow the graphic to fit into the required area, so let's modify it so that it fits better.

Which looks much better. You'll have noticed that I've also updated the title graphics using a graphic file rather than text. You'll notice that graphical-based text looks smoother than normal text. The only problem now is that the red text does not quite work against the green. So we can change the red text to green: