I have not plastidiped my cx3 but i did on my previous car. i had a 2008 honda fit that was originally black but plastidipped sea foam green while keeping the roof and hatch black. from my experience and from looking at our car here there is going to be a lot of masking to keep the plastidip out of places it shouldnt as it can be very difficult to remove later. what color are you considering doing. also keep in mind that depending on where you live there might be laws that state to re register your vehicle under that new color. here in wisconsin if you change the color even plastidip you might get in trouble if you fail to re register the vehicle in the new color. keeping my roof and hatch seemed to be enough to keep out of trouble.