The Nature of Blue
Summary - The origins of the Doctor's blue suit, which I absolutely love, by the way. It fits him as well as the brown pinstripes.

The colour blue had symbols scattered across time and space.
For some, blue was for sadness. It darkened the light. The colour of teardrops.
For some, blue was for peace. It mellowed the senses. The colour of gentle rain.
For some, blue was for hope. It came with the sunlight. The colour of open skies.

On Necros, blue was for mourning. It was worn when the darkness of despair threatened to consume. When the peace was shattered. When the sunlight of hope died away, leaving the night to suffocate.

The Doctor gazed into his reflection, smoothing the wrinkles from the coat. It didn't look as bad as he'd thought. A smile, sad and small, touched his face.

He had worn blue before.