[dspillett]

> I'd recommend for every developer to get one or more colourblind friends.

In the absence of any naturally occuring colour-blind friends, do you have any tips about surrptitious damaging someone's eyes to create one? :-)

Though there are simulation tools avaliable which do a reasonable job, I'll probably stick to those where I have a concern. That feels less drastic.

[wsc981]

There's apps that can simulate color blindness, which can be used for testing purposes.

This is such an app for iOS / macOS: https://michelf.ca/projects/sim-daltonism/