Hi Ed.. Over here on single walled hives we would use 100% creosote or "Cupranol". Some I know mix creosote and old engine oil but I think that there may be poisons in this oil. If you decide to paint it is recommended in the books not to use gloss paints as this prevents the wood from breathing and encourages condensation inside the hive. Color does not really matter but it would be wise to use the natural wood shade or a light color if you get hotish weather so as to prevent overheating. Just make sure that what ever you use does not contain pesticides! Philip Earle Northern Ireland. BCG0311 @ V2.QUB.AC.UK