Feverish eyes

[jacdac]

‘Don’t call anybody,’ Bobbi said. She managed a little more volume this time, but even that much effort seemed to nearly exhaust her. Her cheeks were flushed, the rest of her face waxen, and her eyes were as bright and feverish as blue gemstones –diamonds, or sapphires, perhaps.
Source: The Tommyknockers by Stephen King

How do feverish eyes look? Would they really be bright or rather dull and watery?

If someone's face is glowing with feverish color, what color will that be?

Does one really get feverish from restless excitement?

Thank you

 

[Glenfarclas]

Those aren't really language questions, unfortunately.