Painted my house in revere pewter. Perfect neutral Black Interior Doors and Benjamin Moore revere pewter, great neutral - love the paint color! Omg this is going to look amazeeee with our pretty laminate floors :):)
with a modern styled home I think either a 2 panel door or a flush door looks best, though in a pinch there are some great 5 - 6 panel doors that could work as well. but for me it's always best to keep it simple.