go blue

Look at my poor foot, gone almost blue and cold.

Celia came down holding the baby, who had gone blue and stopped breathing.

"I only do that because your young charges here all go blue in the face if I don't."

You rolled around, went blue and your eyes shot up into your head.

Galen's eyes went blue, and a moment later so did those of her brother.

Ohio should go blue by the end of the night.

The baby boy went blue after his lungs became blocked.

He stared up at me, eyes gone blue and alien.

- My eyes were getting darker, the left one at least would go blue.

Strictly speaking, yes, it would tend to go blue ever so slightly.