Sky is blue, why not green or grey?

The day is clear, I was taking a rest from my daily work also I get my cup of coffee on my desk and I walked outside. Until I look up to the skies, its amazing I said myself. I didn't want to be a melancholy but that sky I was looking at is made me shiver. A bit, but not for long.

The Outstanding Skies, BLUE

And that question -the title of this post- came across my thought. Why the sky is blue, not red-blood-colored? What about green or ridiculously pink? (I don't hate pink, I just don't fancy it)

So after taking my break,
I rushed a bit back to my desk and get google to answer my curious. And I found lot of answer thus bring me a satisfying one. So that is it happened. You can search it on google too, but let me google that for you right here.

After all, the lights from our sun is white-colored. And that 'white' color smashed into our atmosphere and diverse it into bunch of colors. So the blue? The blue is the result of that diversion that received by us on surface. Get me?

Here's some illustration for you might still confused:

This is how the blue happened

The blue light from first diversion is saturated by other scattering

Recognize this?

This is the closest explanation in my opinion. The white line from the left (shoot from the sun). Then it diverted by our atmosphere with some math calculation and degrees thus it came out in so many different color. And the output color that we already know is blue. Savvy?