I think the more you make your car stand out, The more bad attention it attracts. Its sad that keeping low key is the best option, But there are some silly people out there and they will damage the car that sticks out the most (IMO)
Back on topic, You can have the key scratches smart repaired sometimes i think, Have you looked into that? Might be cheaper.
On the whole i wouldnt bother getting it resprayed. But if you get the damaged repaired you might as well see how much it would be for colour coding.
And those jet washers really dont suit