What is illusion? And what is reality? When you can distinct between both, you will look to the world differently.
A fata morgana, a mirage, is illusion. Everything that is time wise and space wise limited, is illusion.
Illusions are all your imaginations because it will turn out differently in one or the other way or may be, it will not happen at all. Memories are also illusions because what you remember does
not take place any more.
It is said, what is not in the beginning and is not in the end, is also not in the middle.
Brother Meinrad Eugster (1848 – 1945) a Benedictine monk in Switzerland used to say:
"O, only have passion. Everything will be over; except the eternity will not."
When we say an object is orange, actually we mean: the object reflects the orange part of the light. – But what is really the true colour of the object ?
Our sense organs perceive only the reflection but not the reality.
So we take the reflection for real. And with that we miss what really is.
Why is the robe of a Hindu monk orange? Some Buddhist monka also wear orange.
In 2007 at Zurich I did not get under the tram. The tram driver had seen me coming and could break. Perhaps this is why orange. ;-)
In India red is the colour for the 2nd caste, the worriers. The colour of the 3rd caste, the distributors (of products or services) is yellow. Monks wear the mixture (or the combination) of red and yellow.
When you see somebody in orange along the street, then you know where the knowledge is. You may get it from him. To somebody in orange you always may put your questions. Talk to him !