A customer has a question or concerns and I hope we can get some opinions on it, thanks
“I hope you are all having a blessed day. I have a simple question. What advantage is there, if any, to leaving a green spectrum light on flooding over the patch during night time hours?”
There isn’t… the green light is there to help you tend to your garden while the plants are sleeping… 
Hellow,
Indeed, lit @peachfuzz said, LEd panels don’t show green spectrum because it is the colour at which the plant is not stressed. In the facts, this means that you’ll use a green light only when you need to work on your plants when they are sleeping, because the it’s the only colour that won’t hurt them much (as far as you don’t put the green light for too much time, because in the long term and when too close to the plants, it can stress them).