Despite the research suggesting colored overlays is not an effective treatment for dyslexia, colored overlays continue to be used as an intervention to improve reading skills of individuals with dyslexia.

What do Coloured overlays do?

Coloured overlays are sheets of translucent or transparent coloured plastic that can be placed over a page of a book so as to colour the text beneath without interfering with its clarity. What do they do? ... They enable some children to read text more fluently and with less discomfort and fewer headaches.

What color overlay is best for dyslexia?

The reason some people find it hard to read black text on a white background is because “their visual cortex is oversensitive to certain wavelengths.” When people with dyslexia or visual stress read black text with an overlay over it, the text becomes clearer while headaches or migraines can be reduced.