You go to this page on GitHub:
You create a new issue (but you have to write in English, it’s 100% in English on GitHub)
After that, well, it’s very developer-oriented what I’m asking you to do 
We had done simulations, it’s normally good for the colorblind:
Ok, I’m a bit struggling to see if it’s worth investing resources in that, but well, why not 
You can make a feature request on the forum? If someone wants to work on it, why not … ^^