![Wink ;)](./images/smilies/wink.gif)
These days I made several tests ... with some success.
![Rolling Eyes :roll:](./images/smilies/rolleyes.gif)
Meanwhile, I learned to remove the sky background from a photo, making it transparent, with a free program like Photoshop:
Gimp (http://www.gimp.org).
Then I think I understood that Yowindow is made up of many levels: the level of the starry sky, the level of the picture, the level of the clouds, the light level (which already works!) The level of smoking, the level of the wind (the 'grass that moves)...
![Image](http://img38.imageshack.us/img38/2944/liveo.png)
...the level of soccer FIFA,
![Image](http://img202.imageshack.us/img202/3135/pioggia.png)
...the level of the rain.
I'm sure we can build any type of background and foreground we see the grass blowing in the wind that moves.
![Very Happy :D](./images/smilies/biggrin.gif)