Abstract
A simple model in terms of nonlinear opponent color codes for the veiling of a weak hue component by a strong one in mixtures of unique yellow and unique green is explored experimentally by means of a procedure which is an extension of the classical hue magnitude estimation procedures. The model is extended towards a more general model for the veiling phenomenon. An experimental validation of the procedure is included. Independent evidence for a hypothesis of Guth and Lodge (1973) regarding inhibition of the red/green opponent system by the yellow/blue opponent system was found when brightness estimates were conceived of as a function of the log luminance of the yellow stimulus component.
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