colour theory works the same to everyone because it works entirely with how colours relate to each other

if you saw colours rotated on a colour wheel 180° - so that your green is my purple - we wouldn’t know

the only difference would be in the hue (difference between green and purple), which isn’t all that important. there are plenty of videos on youtube with artists drawing using random hues but with correct values (difference between black and white) and once they switch their work to colour it all just looks, good, a bit abstract for sure but still good

besides, colour theory picks colours that go together well based on their relative position on the colour wheel. teal works well with orange because they’re complimentary, opposites on the spectrum. neutral colours are neutral because they’re desaturated regardless of hue, neon colours are very saturated regardless of hue

maybe in objective reality we all like the same exact hue of colour, but in our brains we all call it a different word, we’ll never know