Does anyone know of a paint/varnish suitable for insideand outside a rabbit hutch?

Thin white emulsion for the inside . Varnish inside will prevent moisture absorbing ...have the same effect as plastic and will result in a wet hutch. Outside use a shed type wood stain, handy if the colour matches other buildings in the garden. The main way of keeping a hutch dry is to have a good overhang on the roof..mostly to the front with a wired gap twixt hutch and top to allow good airflow.