Why Do All Plants Contain At Least Some Green On Them? How Do Plants Deep In The Ocean Get Energy To Grow?

Obviously….there are probably some plants that I don’t know of that don’t have any green, but what causes most plants to have the color green on it, and what causes plants not to be green at all?
Also, how do plants WAY deep on ocean floors get energy to create food for themselves and such? Also, why don’t those underwater plants drown, like regular land plants?

Can I Buy The “ultra Lean Green Energy Tea” At A Store Anywhere? Or At Least Something Similar?

I really want to loose a little extra weight, I’ve been running 3 miles every other day all summer. And I think this tea can help me reach my weightloss goal. Please do not post any insults or critisism unless it is benifitial. If anyone knows another good weight lose plan please post! Thank you!