The colour of silence
Whenever you have some view of something blue, the blue of the sky, the blue of the river just sit silently and look into the blue of it and you will feel a very deep tuning with it.
A great silence will descend on you whenever you meditate on the colour blue. Blue is one of the most spiritual colours because it is the colour of silence, stillness. It is the colour of tranquility, rest, relaxation. So whenever you are really relaxed, inside you will suddenly feel a blue luminosity. And if you can feel a blue luminosity you will immediately feel relaxed. It works both ways.