Synesthesia

http://www.thehealthjournals.com/images/features/
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“Synesthesia is a condition in which one sense (for example, hearing) is simultaneously perceived as if by one or more additional senses such as sight.”

http://www.elchill.com/pictures/color
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“Grapheme → color synesthesia: is a form of synesthesia in which an individual's perception of numbers and letters is associated with the experience of colors.”

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“Ordinal-linguistic personification is a form of synesthesia in which ordered sequences, such as ordinal numbers, days, months and letters are associated with personalities.”

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“A number form is a mental map of numbers, which automatically and involuntarily appears whenever someone who experiences number-forms thinks of numbers.”

http://www.medleague.com/blog/
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“According to Richard Cytowic, sound → color synesthesia is "something like fireworks": voice, music, and assorted environmental sounds such as clattering dishes or dog barks trigger color and simple shapes that arise, move around, and then fade when the sound stimulus ends.”

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“In the rare lexical → gustatory synesthesia, individual words and the phonemes of spoken language evoke taste sensations in the mouth.”

http://faculty.washington.edu/chudler/syne.html

http://en.wikipedia.org/wiki/Grapheme–color_synesthesia

http://en.wikipedia.org/wiki/Ordinal_linguistic_personification

http://en.wikipedia.org/wiki/Number_form

http://en.wikipedia.org/wiki/Synesthesia#Sound_.E2.86.92_color_synesthesia

http://en.wikipedia.org/wiki/Synesthesia#Lexical_.E2.86.92_gustatory_synesthesia