I need to match the finish of a 100 yr. old pine floor for an addition. The addition is 1 step down from the original, so just close on the color and finish will work. The old floor appears to have an orange shellac color. No paint store has a stain close to it. I don't know the finish either, butI would like to use polyurethane for ease of care and durability. Any ideas on what to use to match color? Thanks.