FIFTH POSITION OF MASTERY

29. ‘When a man without the subjective idea of form sees externally forms that are blue in colour, blue in appearance, and reflecting blue,–just, for
instance, as the Ummâ flower is blue in colour, blue in appearance, and reflecting blue; or, again, as that fine muslin of Benares which, on whichever side you look at it, is blue in colour, blue in appearance, and reflecting blue,–when a man without the subjective idea of form sees externally forms which, just in that way, are blue, blue in colour, blue in appearance, and reflecting blue, and having mastered them, is conscious that he knows and sees-that is the fifth position of mastery.’

Buddhist Suttas – MAHÂ-PARINIBBÂNA-SUTTANTA 
Translated from Pâli by T. W. Rhys Davids [1881]
http://www.sacred-texts.com/bud/sbe11/sbe1103.htm