Do あなた think color is an opinion または a fact?

I don't think it's really either. It's not a fact because different people and 動物 see different things based on the cones in their eyes; it's not an opinion because I don't see it as a "belief" または something あなた can choose.

Also hey, ランダム fact from the UChicago essays: The mantis エビ can perceive both polarized light and multispectral images; they have the most complex eyes in the animal kingdom. Human eyes have color receptors for three Colors（色） (red, green, and blue); the mantis エビ has receptors for sixteen types of color, enabling them to see a spectrum far beyond the capacity of the human brain.

Cool, yeah? :D

Well if your talking what is the best color then opinion but if your talking Sybolising または official Colors（色） than fact so really both.

Fact.

Opinion....because if you're colorblind...? ;A;

Yeah your information is really cool it so amazing well according to me I think color is a fact to some extent but I'll say it's a opinion

Both

oooo very interesting question, actually, according to what i know, like, from school, books, docs and different information i unconsciously collected over the years, color comes from us, not objects and have something to do with light, lol. so some 動物 can see color that we can't see and we can see Colors（色） that some 動物 can't see...however, the object appears to us a certain color, not because of our conscious decision, but because our brain receives the light reflected of that object in a certain way and we perceive it to be a certain color, therefore, no matter how much we want something to be blue または purple または red, it's always going to be that color which our brains are wired for us to see. So, i guess even though color is an illusion and appears differently to 動物 and even some people, because we have to choice in the matter of which color we see, it must be a fact...i think, lol! :D

(Your 質問 is confusing me)
Well, I suppose it means how あなた define 'colour'.
(I'm still confused. Please explain to be what あなた meant otherwise I'm going to spend the rest of the 日 thinking about this ;n;)

It depends entirely on what あなた mean によって "color". If あなた are referring to the intrinsic value of whatever あなた are observing, または the value of light reflecting from an object, then that is a fact. If あなた are referring to the assessment of that value, then that is an opinion.

For instance, so long as all conditions are the same, the value of light reflecting from a surface is the same, no matter who is observing it. However, we may all interpret that value differently.

It is a opinion representing what people are. Propel have different お気に入り colours.