Which spray paint.

Hi everyone just a question about paint. I'm making some repairs to my bumper and bought a can of Skoda candy white from halfords, have done all filling and white primer but when spraying top coat the colour looks nothing like the white on the car, it looks an off greenish tinge if anything. Just would like to know if there are any different shades of white I should be trying like vw candy white or am I best to repair and prime the damage and take it to a spray shop and let them blow over the areas. Thanks.