Nintendo of America announced today that it's adding Pearl Pink to its stable of Game Boy Advance SP colors, targeted "specifically to cater to the tastes of girls and the people who shop for them."
The new color ships on March 27, and along with the already-released Graphite and Pearl Blue, features the upgraded backlit screen. All models of the Game Boy Advance SP retail for $79.99.
Update: Dean reports that the Pearl Pink SP has already been on store shelves at EB Games in Canada for a week now. Your mileage may, of course, vary in finding this color in your hometown.