Quoted:
Where did you find the matching grip, stock and rail covers like that? I'd like a set similar to yours but in pink.
If you check out the thread I linked to, you can make those by dyeing the Magpul parts with Rit dye.
Unfortunately, you can't have pink because you have to start with the available magpul colors, and there's no combo of existing color + dye that can produce pink.
We had a
thread a while back trying to convince Magpul to offer either white or undyed polymer items, so that people can dye to any desired color, but they weren't willing to do that.
Here's another thread on the purple dye parts:
http://www.ar15.com/forums/t_6_19/351003_RIT_color_combos.html
Cavalry Manufacturing sometimes has pink furniture parts, not sure what their current status/stock would be on there.