The huge problem is that we lack vocabulary to talk about unique qualia. Our words come from talking to other people and if nobody around us has the same qualia as we are, nobody gave us a word.

At the moment I'm learning to distinguish colors better via an Anki deck. I use the CSS color name definition. Seeing the difference between navy and midnightblue is still hard for me but I'm confident that I can learn it with practice. Some day I will hopefully even be able to tell apart snow from floralwhite.

I like the particular deck and if someone wants to train their color perception I'm happy to share it. It's build in a way that you get progressively more difficult decisions and provides years of fun at 5 new cards per day.

I would also like to create a deck to train sound perception. Does anyone know of a good tool that can automatically produce sound files with a specific pitch for pitch training? At best a tool that can be used via the command line.