Have decided to chart the whole mall in colours according to how noisy the location is based on reverbration and number of persons. Noise and sounds to colour association and as a bunch of blobs... Like colourful Venn Diagrams of harmonies and dissonances. 

Good idea?

I think it'll work when I put it into the context of the object I have to design to go along with it.

I may have just had one too many cups of coffee...