Who copies from who the cloud legend?

users
#1

Have a look at the cloud legend LibreOffice Draw:
http://postimg.org/image/4bsfawlmd/

Looks nice, the vector-graphic.

Now have a look at the clound legend in mspaint of the Windows 8 preview version:
http://postimg.org/image/l0tv6ti7p/

I think, it looks very similar.

Are other clouds possible?
I searched the web:
http://www.freebievectors.com/de/abbildung/29530/wolke-clipart-clip/
http://www.blitec.de/images/product_images/original_images/67329_0.jpg
http://cdn.freebievectors.com/illustrations/7/c/cloud-clip-art-5/preview.jpg
http://www.freebievectors.com/de/abbildung/22229/gedanken-wolke-clipart-gedanken-wolke-clip/

So, have LibreOffice copied the MS-cloud image or MS copied the LibreOffice cloud image? Or is the cloud free for everyone to use it?
How looks the cloud in Photoshop?

Greatings
theuserbl