Engine Paint?

I have been using the Duplicolor black to paint my Z1R engine and it was a perfect match. Does anyone know of a good match paint to use on a KZ1300 motor? I am not sure if duplicolor makes a gray color paint

i have never had any luck getting paint to stick to an aluminum motor,ive used theharley brand wrinkle paint on cases before but even that only lasted a couple seasons

My son used a silver motor paint on his Acura engine. It looked good but was a little silverish.