This is the 4495th most frequent Portuguese word.
claros
"Claros" means "clear" or "bright" areas.
In this sentence, 'claros' is used to describe the color of the eyes, meaning 'light-colored'.
Os olhos claros dela são lindos.
Her light-colored eyes are beautiful.
Here, 'claras' refers to the clarity of the ideas, meaning 'clear and comprehensible'.
As ideias dele são muito claras e fáceis de entender.
His ideas are very clear and easy to understand.
In this context, 'claros' indicates the brightness and cloudlessness of the days, meaning 'clear and sunny'.