Our cat has scratched up one section of the stairs handrail. Wrapping rope around the handrail has stopped the cat but I'd now like to repair the scratches. Can anyone advise what I should apply so that the repaired handrail is the same colour as before, so it matches the handrails on the rest of the stairs? I don't know if the existing treatment is paint, stain or something else but the handrails are quite dark. I've looked in the shops but I can't see anything that looks to be the same colour.