As wolfkid92 said in the title, Natureboy, this strange colouring seems to only occur in asian elephants.
I had forgotten about this, to be honest, and it has just happened to me. If I remember rightly, i didn't have this (pretty!) problem before. Maybe its a coincidence, but I am using Vista now, where I had used Windows XP previously.
Actually, I don't really mind it. It's....cute!!