What is a simile for red?

Here are some similes for red, using different aspects of the color:

Brightness:

* Red like a burning ember.

* Red like a sunset.

* Red like a ruby.

Intensity:

* Red like a stop sign.

* Red like a fire truck.

* Red like blood.

Warmth:

* Red like a hot chili pepper.

* Red like a warm fire.

* Red like a blooming rose.

Other:

* Red like a ripe tomato.

* Red like a candy apple.

* Red like a scarlet macaw.

The best simile will depend on the context and what aspect of red you want to emphasize.