led lamp

[sealerguy]

I'm looking for some help with LED lights. I'm a new grower from Massachusetts who recently purchased bridgeable LED grow lights. I noticed a majority of the lights are pink but there are a few blue as well as red lights and didn't know what the different colors work for. There is also a variable dimming switch on the top to control the light and saw that some people use it to simulate cloudy days where other people use it to run very low light 24 hours as opposed to 12 on 12 off. I am very interested if someone could help explain this to me I apologize for my ignorance please be kind