What makes it mystical is that there is color as a physical phenomenon (which relies on rods and cones etc.), and color as a subjective experience which occurs

What makes it mystical is that there is color as a physical phenomenon (which relies on rods and cones etc.), and color as a subjective experience which occurs entirely in the thought space of consciousness. Typically the mapping between the two is relatively standard and static, but imagine a situation in which your consciousness registers something which has not correlate in the physical world. That doesn't make it any less real to your consciousness.