Many agree there are seven different colour LED light therapies to choose from, including red, blue, yellow, green, purple, cyan and white. That said, some say ‘white’ isn’t a colour (it’s a ...

It is a glow-in-the-dark night sky too, colored a mix of green, yellow, and red. Its colors result from scattered sunlight, oxygen, and sodium from shooting stars.

Signal: Green light . Here, you can see that when valuations roll over, with the change dropping below zero over a 10-month or 200-day period, the market itself typically drops shortly thereafter.

The blue light, a dot compared to the full orb of a traffic signal’s green, yellow and red, is for traffic law enforcement. When that blue dot shines, it means the signal is red.

Basic traffic rules like understanding traffic lights are taught to us during childhood in school and at home. Every regular ...