長阿含經 10.p117

10.p117

“Without an inner perception of form, one observes external form to be yellow. The yellow form, yellow reflection, and yellow sight are like a yellow flower or a yellow Vārāṇasī cloth. They are completely yellow forms, yellow reflections, and yellow sights. Creating such a perception, one continuously observes and attends to it. This is the sixth change to the senses.