I can see that it might be difficult to explain to your parents, but I still think this is alarming enough to warrant a visit to an eye doctor, an ophthalmologist and not an optometrist. You could even go to a regular doctor, explain what you experience, and you wil probably be referred to an eye doctor. This might help your parents to take it seriously. It doesn’t sound at all like normal colour blindness, which you would have experienced from birth and which you would have noticed much sooner.
You have not said how old you are, but as you are concerned about your parents, I assume you are not yet of an age where you can just go to an eye doctor on your own. I don’t want to pry into your affairs, but as you are asking for help here, it might be useful to give a bit more information on your age and dependence on your parents.
I would certainly suggest you do not do EM pracitces that might cause you eyestrain until you have found out what is wrong.