Communication - Art using computer parts

This mixed media artwork using computer parts depicts a conference call gone bad.
I am still working on it but here's a detail of the painting showing some computer boards representing the call attendees and the audio signals..

Communication - Art using computer parts - Mixed media on canvas board

I wanted to do a piece about voice recognition or audio processing, and decided to do it about phone communication.
I am using a combination of cadmiums and cobalts. The background audio fog is painted with cadmium reds and oranges. The circuit board designs are painted in a cobalt teal. I feel it needs an accent color but cannot figure out what yet.