Colour Overlay is an app that has been designed to help people who experience difficulty reading text or viewing images.
It offers an Image Viewer, a Camera Viewer (for devices that have an inbuilt camera) and a Web Browser with the ability to overlay colour transparencies over them.
Choose your colour from 10 of the most commonly used overlay colours, or use sliders to find the exact colour that helps you the most.
You can set the transparency of the overlay too, allowing you to fine tune the overlay to your needs.