Sunset in blue and purple

I took this photo while sitting in the garden, enjoying the evening outside - and suddenly the sky caught my attention. We have lots of beautiful sunsets here, but this one was especially nice because of the different shades of white, purple and blue. As I held the camera (a rather cheap thing that usually doesn't make any proper photos...) a bit slanted (is that the right word, by the way?!), the tree and plants turned black on the picture.