Blue Lung in dreams
An organ of breath — the place where the world enters you in measured amounts.
How blue changes the reading
Blue colour cools the symbol — calm, distance, the steady side of the spectrum. Whatever the base meaning, blue says the situation is operating at a temperature you can think in.
The base reading of Lung
A lung in a dream is the dream's image of the place where the world enters you in measured amounts. The lung is not voluntary in the long run; you breathe whether you remember to or not. The dream brings the lung when the question of what you have been breathing in — air, atmosphere, a household mood, a working environment — is alive. A clear, working lung is the dream telling you the intake is healthy. A lung struggling, full of fluid, or punctured is the dream noting that what you have been taking in has become incompatible with you, and the body is showing the cost of the continued exposure.