Multiple colours in GenomeGraphs?

Hi all,

I have just started using the GenomeGraphs package, which I think is a
really good piece of software :)

I am using the package to plot expression values across a genomic
region. However, it seems to plot all points on the same "track" in the
same colour? I was wondering if it is possible to use different colours
to highlight particular probes I am interesting in, (or use different
plotting characters). I thought something like:

dp=DisplayPars(color=c("red","blue")) might work, but it just produced
one colour. Apologies if there is already the ability to do this, but I
didn't see anything so far.

Many thanks,

Mark

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