I've used Aqueous Hobby Colour and they have a few metallic colours, though I don't think they have pink, however you could probably mix something from the other metallics (I made purple by pouring blue metallic into a bottle of red metallic).
They're pretty good paints, though a bit trickier to use than
GW paints, however the metallics also look much nicer than the
GW metallics
IMO (more of a pearl finish).
The aqueous hobby colour range is acrylics, like
GW paints and so on. If you're willing to try enamels, there's a ton of coloured metallics, as enamels are the paints of choice of model car/plane enthusiasts, as such there's a lot more choices in metallics.
Another option is Testors make a range of acrylics that have a lot of metallics as well. I believe hot pink pearl is a metallic, and there's a few other options as well...
http://www.testors.com/products/136696
http://www.ebay.com/itm/Testors-4640-Hot-Pink-Pearl-GP00350-1-2-oz-/270954142706#vi-content