His blue eyes were light, bright...

[diamondcutter]

He was tall, thin, and very old, judging by the silver of his hair and beard, which were both long enough to tuck into his belt. He was wearing long robes, a purple cloak that swept the ground, and high-heeled, buckled boots. His blue eyes were light, bright, and sparkling behind half-moon spectacles and his nose was very long and crooked, as though it had been broken at least twice. This man's name was Albus Dumbledore.

Source: Harry Potter and the Sorcerer's Stone, J. K. Rowling

Does the word “light” here mean “soft” or “gentle”?

 

[Tarheel]

My guess is it refers to color.