I would suggest Dulux Sago or Ecru for the walls (beige/light brown) and then a feature wall in either pink or green.

Having a brown tone on the walls and having your ceilings and architraves (sp?) white will accentuate your white furniture.

I would suggest going down to Bunnings (or similar) and taking a sample of your pink bedding with you. Go through their colour charts and try to find a feature wall colour to match.

Good luck - make sure you take heaps of photos!!