Available in 10 colors, this upgrade offers a subtle glow in virtually total darkness, it is not an "in your face" distracting neon light! Choose a color that compliments or contrasts with your car. Simple instructions allowing for easy hook-up to your tail or brake lights, as desired. A strobe option is even available! We use only the best materials, including the original patented lighting material and transformers made in the USA. Ultra low power consumption, no heat, and includes the option of extending the power source to the inside of you car allowing for a simple cigarette lighter plug-in power source. Light colors do not change, must choose one color.