
Blue corundum,
to be precise.
Breaking Bad Season 4, Episode 2

Some believe the sky is BLUE because we
live inside the eye of a BLUE-eyed giant.
Game of Thrones Season 4, Episode 3

Midnight BLUE or silver?
Game of Thrones Season 6, Episode 6

If you would step right here
on this BLUE spot.
Breaking Bad Season 5, Episode 15

Although One Fish, Two Fish,
Red Fish, Blue Fish
The Big Bang Theory Season 5, Episode 7