Look at the leaf. look at the water on the leaf. Is it green? Is it clear? Isn't water blue?
Pure water has a slight blue tint to it, yes. But does it always appear blue?
Not exactly. Not to the eyes.
So what color is the water besides blue? If it's not all blue, is it clear?
No, it can't be. Is clear truely a color?
The answer; The water is green. For the time being, at least.
Water is different. Like a mirror or glass, they don't appear to have a real color. The truth is that they are simply the color that it reflects and/or lies on.
This "green water," won't stay green as said before. Maybe it will soon become brown when it hits the soil. Or maybe it will become blue once it goes back to the ocean. We can't be sure. we can only see that water can take everything. Every color of the spectrum can be shown through things that reflect.
So admire your eyes and the light that you see. The universe has more color than you think.