He said two men in overalls and carrying ladders and equipment painted the pub in Church Lane about 0600 GMT on Tuesday.
They left a receipt under the door, which contained false details, he said.
It will cost several thousands pounds to correct said police who have appealed for information.
Mr and Mrs Smith, who have run the pub for six years, are planning to return the pub to its original black and white state as soon as possible.
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Several thousand pounds to put right .Someone's aving' a larf surely?