He’s saying that the fix to stop it from being random as it is now is to make it so it’s gives a return for each color instead of random.
So it’s not broken. It’s working as intended at the moment but there’s a fix to make it no longer be random and still keep us from getting weighted in our favor.
We are lucky we don’t get a completely different color than what we put in. I mean how colors actually work mixing two colors together would give you a completely different color than either of the two added.