It runs within!
No, I’m not going to ruin up your weekend by showing you horrific pictures featuring human blood, which is red in color as you know.
Once upon a seaside picnic, beach was covered up with Red seaweeds.
A Red colored bridal dress in a Red box.
Uzair’s very first bicycle, which was Red in color.
And of course, Red is the color of brake light in every know running on this planet.