blue glare

[jiang]

Dear teachers,

Paul only gave a blue glare from his big, rather close-set eyes. He would speak to nobody when he was in full tilt.

"blue glare": does it mean the color of the eyes? Or does it mean "looking at somebody angrily"?

Looking forward to hearing from you.
Thank you in advance.

Jiang

 

[jamiep]

I think it means both. His eyes are blue and he glared. It's not any kind of fixed expression that I've heard before.