In that model the truth is simply what colour we like better.
To ask who is right in this case in truth is one demanding only one can be right. It's deluded. Neither choices will intact make blue or green anymore admirable to other self collapsing wave functions ( minds ).
If one is going to argue what is the prettiest colour in the universe, well, that isn't too intelligent now is it ?
Depends on the field of science, it's actually a difficult question to answer but not impossible. There are entire fields of study on color that you're effectively denying with this Dunning Kruger truth.
You're derailing the subject....
Color theory has shown itself to be a good resource for increased profits, especially in graphic design these days, so any understanding of color over how it affects members of said universe seems smart to me. It's like how there's profits in understanding Thumbnail Design, which itself roots from other forms of artistic study that preceded it.
You're talking to this community's premiere graphics expert.
We build rockets and send spacecraft to space based on mathematics. What's true holds the same with or without out our take. To make anything that works, true and false must be static.
You will learn one day that there is no such thing as absolute truth. Everything depends on the metric you use to determine that truth.
If that's so, then that would be an absolute truth, and you contracted yourself.
There's little room for error when building rockets, if the engineers determined their own truths, their combined efforts would be unsuccessful.
But how do you know if rockets work or not, or for that matter if they are even real?
I know to you this sounds like a dumb question but just humor it for the sake of the thought exercise. While you and I can agree to both know what rockets are, does that make rockets real?
If life is a simulation/illusion, then what matters while we're here is the game. Duality, technology, time. If everything is an illusion, then that would be true. Being able to prove or disprove anything doesn't determine the truth, nor does personal opinion define the truth to be customized for an individual while being false to another. Just never happens.
In your question you'd like me to entertain, I've seen model rockets. They work. I've seen how satellites changed the world. From the 90's till now the world never changed that much with the exception of mobile devices and other ways of using radio waves. From the 80's though, it's a huge leap. I saw that.
If this is one big illusion, then this is a case of matter over mind. We are to understand, while the only thing we can overstand, is our own fiction. And I mean our own fiction. Whatever happens to Luke Skywalker is in the hands of officials who overstand Star Wars.
Our own inventions are things we understand. Those who build rockets, must understand. Even advances in that technology, as it is for all technology, are things that are understood. Within the laws of physics.
For something as critical as rocket science, what's true and false is very profound. To think something true for one person to be personal, no. No reason to even consider what's true for someone to be exclusive to them.