The brake kit that I have (e-racer wilwood kit) looks great with my 17 inch rota attacks. For the rear, I have slotted stock replacement rotors and I painted the caliper black.
The slotting looks exactly the same on the front and rear. It doesn't look funny at all.
It MAY with 18s though, but I think 18s are too big on a Protege anyway.
(I need to take pics. My car looks pretty clean - Yellow, black hood, wheels, brakes)