Blocking-in the colour is a simultaneously meditative and overwhelming process, in which layers of colour are digitally ‘painted’ onto the restored photograph. How many layers? In some instances, thousands. The garish colour scheme is intentional, allowing every detail to be picked up, so we can differentiate Lincoln’s jacket buttons from his waistcoat buttons and everything in between. Each area will contain several (sometimes dozens of) individual layers to simulate colour gradation in light and shadow.