I wasn't really aware of color vision deficiencies until I came across a player that was unable to play one of my games. It was as easy as swapping some of the components. This is so easy to avoid in pre-production that it's no excuse.https://twitter.com/robinwriting/status/1029276879482707968 …
I picked it back up about three years ago, made a new version. Showed it to publishers along with my other games and only one publisher seemed interested, but their schedule was full. They ask about it at every event.