This is one of the hats I've been working on lately - adapted from a design in Spin Off magazine. It's a good way to use small amounts of different colours. The grey side can be worn when feeling more conservative, and the green side, below, is for a more extrovert mood.
The ice cream van has been playing a tune that I knew, but couldn't quite identify. DH has found out that it's the Bluebell polka - remember it?