Photons do not carry any colour attribute, so what your pilots brain sees as colour is a 100% illusion.
Also your pilot senses two slightly different images by their two eyes, but the brain combines them into one seamless image, which can be thought of as another illusion.
There are also plenty of scientists researching a model of the brain/consciousness based on the premise that 'reality' does not exist, but the brain has evolved to create a 'model' of the world that seems 'real' in order to allow organisms to survive/replicate.
There is also the example described by physicists that the wooden table top in front of you seems solid to your brain, but in fact is constructed from minute packets of energy separated by empty space - the table top is not solid at the atomic level, but the brain creates the illusion that it is.
I am sure that other posters will chip in with other examples.