I reffed a kids soccer game the other day where a kid said, "but I'm colorblind to these two colours!" as the game started.
One team red, one team green
He had to focus on the black sunburst on his team to help him
This got me thinking that I feel like it could be useful to build a colorblind hue-shift app that you select target hues that you need to be able to differentiate (in this case yellow and green) and then it shifts those into labeled colors that you can actually tell apart.