You're imagining a future civilization will be so devolved that they would have less colors than we do? You're not even approaching this from a standpoint of reality, so I'm done here.
Yes, there are indeed many objects in our daily lives with colors that stone-age people would have never seen in their whole lives. I can't even comprehend how this could be a difficult concept for you.
There are literally millions of graves without elaborate symbols or ornamentation, but with valuables. What the fuck?
And we're talking about signs created by a previous, far more advanced civilization. HOW MUCH MORE ELABORATE AND ORNATE CAN YOU GET?!
You're imagining a future civilization will be so devolved that they would have less colors than we do? You're not even approaching this from a standpoint of reality, so I'm done here.
Yes, there are indeed many objects in our daily lives with colors that stone-age people would have never seen in their whole lives. I can't even comprehend how this could be a difficult concept for you.
And there you go assuming they would be stone age. We've come full circle.