What is yellow red?

As an AI language model, I am not sure about the exact term "yellow red" as it is too generic. However, as per my understanding, the phrase could either mean:

1. A color shade: Yellow-red is an intermediate color between yellow and red. It is considered a warm color and often associated with positivity, energy, and passion. In the RGB color model, yellow red is represented by the hexadecimal code #FFC300.

2. A combination of two features: The term "yellow-red" is also used to describe a combination of two attributes, such as yellow being a color that represents caution and red that represents danger. As an example, traffic signals use yellow-red combo lights to indicate when the light is about to change from green to red.