As a person who has studied lasers and light in general, yeah, there is some small variance in the way people perceive color (for instance, some people can see slightly past red on the electromagnetic spectrum). What this has to do with the reality of the situation that when you point at something blue it is blue is a bit of a mystery though. You don't generally hear people saying 'no the sky is actually green!'.
Anyway, everything we can observe about this universe is ultimately subjective. The opinions formed by the scientific community is never claimed to be 100% accurate because there are inherent limitations to the depth we can probe the universe. That the 'fact' that the sun revolved around the earth changed to the earth revolving around the sun is a prime example of such a shift in belief based on accumulated evidence. So, if 'facts' can be wrong, opinions damn sure can.
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There is no shame in not knowing; the shame lies in not finding out