Blue.

Colors.

White; for sweetness, and kindness.
Red; for madness, and braveness.
Yellow; for smartness.
Green; for peace.
And Blue; for friendship.

If your blue turn into a white,
Your friendship is sweet and kind.

If your blue turn into a red,
Your friendship is ruined, but in a same time,
It's going stronger.

If your blue turn into a yellow,
that's mean your friendship are the smartest.

If your blue turn into a green,
your friendship is in a peace.

But when your blue turn to black,
your friendship is gone,
leaving you behind,
and never coming back.