Idioms with colors

Question 1

to be in the doldrums

Answer 1

Broyer du noir

Question 2

to be terrified

Answer 2

Avoir une peur bleue

Question 3

to have a sleepless night

Answer 3

Passer une nuit blanche

Question 4

black on white, it is obvious

Answer 4

Noir sur blanc

Question 5

to be red in the face

Answer 5

Être rouge de honte