If you go/turn red, your face becomes red because you are angry or embarrassed.

Look, you've embarrassed him - he's gone bright red! 瞧，你让他很尴尬——他的脸都红了！

Ben went bright red with embarrassment.

I could feel myself turning bright red as I stood up.

Everyone turned to look at her and she went bright red.

I knew how angry he was because he'd gone bright red.

Did I turn red when he asked me out?

See also: red adjective