I love stamping lighter colours over dark bases, although I will say I wasn't sure about my choice of colour combo I used for these. They did grow on me a little though.
I did a base of OPI Midnight in Moscow, with stamping of A England Princess Tears and BM-314. I topped it all off with China Glaze Fast Forward.
I'm always in love with how Princess Tears stamps, it's just perfect. I think I might have to try it over a light base aswell one day.