Just before Easter, I made the above cake for my colleague and friend Shauna's birthday. It is a an old fashioned marble cake, from the Australian Women's Weekly Bake cookbook.
I made this cake using brown sugar instead of white caster sugar because at the time, that was all that I had in the house. It seemed to turn out just fine, regardless. Although it is not the prettiest cake I have ever made, I think it is quite respectable, and tasted, well - like cake. I simply decorated it with water icing.
The recipe is very similar to this one, except that for the three colours, I had white, pink (using pink food colouring) and chocolate using cocoa powder instead of white, chocolate and orange.