Color tasks are tasks that involve the recognition of colors. Color tasks can be classified according to how the color is interpreted. Cole[1] describes four categories of color tasks:
Earlier classification of color tasks did not attempt to be comprehensive, and mainly differentiated between color matching/ordering, pseudoisochromatic plates and color-naming.[2][3] In Cole's definitions, the latter would be denotative color tasks and the others would be comparative color tasks.
geschwind
was invoked but never defined (see the help page).