I like your new avatar, Aileen but I am not sure what it is.
It's a fractal image of leaves. Fractals being "a geometric pattern that is repeated at ever smaller scales to produce irregular shapes and surfaces that cannot be represented by classical geometry. Fractals are used especially in computer modeling of irregular patterns and structures in nature." - http://www.thefreedictionary.com/fractal
A lot of people don't like them but I love all the wonderful colours and images they can produce. My last avatar was also a fractal, unhelpfully called Fractal 76, so I've no idea what it was meant to be, but I liked the colours it had on a black background. However now that spring(???) is upon us I wanted something a bit brighter and more colourful.