Typical. They've changed their mind. Clients always do this, just
when you think that you have a design finalised and you're busy
working away to achieve it, they go and say something like, "could
you just add X", or, "Have you seen Y, I think that it'll
look good". When X or Y are about two or three weeks work and
mean that you're going to more or less start from scratch again.
It's a good job that I knew that this was going to happen,
planned for it and more importantly made sure that I was going to
be paid by the hour rather than for the project - hurrah!