I have just gone back to work and did not have time to do a new manicure. So I cheated I'm afraid, I used my last manicure (the blue ombre-gradient). I polished over it with a VERY old duo chrome I bought yonks ago from QVC from Special FX, anyone remember them or own them? I think it worked fairly well.
You can just abut make out the duo chrome effect, it is a blue with magenta/purple running through it.