There is a way to tell all of those people about color. We need a color talk an give it at all FOSS conferences. You need to teach users and developers why they want color management. It is not only important for graphics designers or developers, also for all the rest that UIs look the way they have been designed. And if you enjoy great photos you want that it look correct and not green, magenta or blueish.
Create a talk and visit conferences, then the pressure on wayland to implement it will get bigger.