Nokia is trying something that no other phone makers (that I can think of) have tried. They are matching their pink Nokia Lumia 900 with pink nail polish. And they have even recruited the help of celebrity manicurist Kandi Banks and style expert Niki Schwan in promoting the phone.
However, do note that this happens in the US. Do not go around looking for this pink Lumia 900. Here is a video on the phone and the celebrity manicurist and style expert.