We have recently seen quite a rise in the use of polygonal graphics as textures, backgrounds and forms of ornament in web design, graphics and particularly for mobile phones.
You can add a polygonal texture to other graphics, photos, illustrations – they add a particular quality, something new but pointing back to the easier and more comfortably simple.
Using the backgrounds on their own provides something simple and straightforward in terms of design. It adds but is in no way overpowering.
Check out the links to a whole raft of freebies – there are a lot more out there.