The prosecution also plans to call a handwriting expert to discuss the difference in ink colors.

Participants must name the ink color of presented words while ignoring the words themselves.

Subjects were then instructed to say the name of the ink color and ignore the text.

In the example, this means focusing on the ink color and not the word.

His most famous paintings are in ink, water colour and pastel.

Incongruent stimuli are those in which ink color and word differ.

In the second trial, the participant must name the ink color instead.

"The change you noted was made to be closer to the actual blue ink color," she e-mailed back.

The photographer may also decide here to use a different ink color.

Within each category, it supports a specific size, paper stock and ink colors.