How about a Vinyl Wrap? See http://wildboatwraps.co.uk/Case-Studies
This was included in an article in Practical Boat Owner recently. I have seen Munkenbeck (see website, follow the link) in the Solent and it is flawless. There was a story in the PBO article about someone who always wanted a dark blue yacht hull but knew that it would limit the resaleability of the boat, so he bought a white boat, had it wrapped in blue, enjoyed it for a few years, then when he sold it he peeled off the blue vinyl to reveal a pristine white hull.
The treatment of your Wayfarer would differ in one small way…