Gilliam (after Sam Gilliam) is a service that chromatizes financial data so as to reveal inequities.

The Art of Chromatization

High Frequency ↔ Low Frequency

• The higher the price, the closer the color is to violet-red.

• The lower the price, the closer the color is to red-orange on the color wheel.

High Amplitude ↔ Low Amplitude

• The greater the impact of the transaction, the lighter the color.

• The lower the impact of the transaction, the darker the color.

High Spectral Entropy ↔ Low Spectral Entropy

• The greater the value of the transaction, the higher the spectral entropy of the color.

• The lesser the value of the transaction, the lower the spectral entropy of the color.