Final answer:
Colored halos in angle closure glaucoma are caused by changes in the perception of colors due to increased intraocular pressure.
Step-by-step explanation:
In angle closure glaucoma, colored halos can be seen due to changes in the perception of colors caused by the increased intraocular pressure in the eye. The increased pressure can compress blood vessels and affect the flow of nutrients to the optic nerve and surrounding tissues, leading to visual distortions. These distortions can result in the perception of colored halos around lights.