Rust under number plate

[axnxdxy]

I've removed the rear number plate ready for attaching a new one and have found that there are four holes drilled in the boot lid, and that they are starting to rust; small bubbles creating roughly a 1 inch (max) diameter circle around the hole.

I'm wondering what is the best step to take before fitting the new number plate? Could I cover it with something and leave it or should I rub it down to remove the bubble and then spray over to cover the metal? My worry with the second option is that it will look a bit odd if anyone in the future removes the number plate and finds a different coloured patch underneath. The car is liquid yellow so it will never match unless I get the panel done, which isn't really an option. I won't be using the holes as I plan to fix the plate on with heavy duty foam tape or dual lock velcro.

Thanks for any help that can be provided!

 

[Darius]

I'd rub it Down and spray it with some sort of metal protect like anti rust primer and if you want to attempt to match the paint after that its up to you, but it's covered by the number plate so I wouldn't bother painting, but you need to get rid of the rust and protect before it bubbles more imo.

Halfrauds :O
http://www.halfords.com/webapp/wcs/...&productId=896169&categoryId=255239&langId=-1