Last week I attended a workshop on raising awareness about accessible technology. With Apps, Apple have done a huge amount to make accessibility work fantastically out of the box for their standard controls. However, as soon as you deviate away from those controls, or introduce your own copy that references shapes or colours, things begin to degrade.
Nearly 5% of Brits suffer from some form or colour vision deficiency^1, yet there do not seem to be any useful tools for developers or testers to inspect Apps at runtime.
To rectify this, I've created a simple class called ALDColorBlindEffect that you can drop into your existing project.
I've just finished analysing my own App, and as you can see from this video, I have a bit of work to do!