Are pictures from opensource graphics pack?

The main web site pictures are so cool. I’m wondering if they are from some open source graphics pack or made for the site?

e.g. images like this:

Thanks! Glad you like them, we were pleased with how they turned out too - and yes, they were actually custom made for the site.

That’s a pity… )))

But honestly, your graphics is the best! I have not seen anything better anywhere. The colors, the cleanliness - perfect!

Maybe you can extend the pack with more images and make it an addon, even a paid one?