I saw his round mouth's crimson deepen as it fell,
Like a Sun, in his last deep hour;
Watched the magnificent recession of farewell,
Clouding, half gleam, half glower,
And a last splendour burn the heavens of his cheek.
And in his eyes
The cold stars lighting, very old and bleak,
In different skies.

Wilfred Owen

http://www.poemhunter.com/poem/i-saw-his-round-mouth-s-crimson/