Synesthesia

Synesthesia |ˌsinəsˈθē zh ə| ( Brit. synaesthesia)

the production of a sense impression relating to one sense or part of the body by stimulation of another sense or part of the body.

New Oxford American Dictionary

Example of Grapheme-

Color Syesthesia

Synesthesia: A film by Jonathan Fowler

http://www.youtube.com/watch?v=a3DbScY8Ais

Synesthetic Metaphor

“That’s a loud Shirt”“The melody was sweet”

SourcesNew Oxford American Dictionary

Wikipedia- Synesthesia, Grapheme-color synesthesia

Youtube.com

BoingBoing.net

Synethesia: a film by Jonathan Fowler