All the interior ( pine) logs in our 33 year old log home that were originally left natural and only had one coat of satin polyurethane applied when first built, have now turned an ugly orange color. All the ceilings are tongue and groove pine,and were left natural as well, and also only one coat of clear satin polyurethane applied at the time of building; these too have turned an ugly orange color. Aside from sanding all ceilings and walls (which thankfully are the flat side of the log)is ther